Sustainability in Agriculture Smart Technologies and Green Transformation

SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES AND GREEN TRANSFORMATION Editors Yusuf KAYGISIZ Mehmet Fuat GÜLHAN Lyon 2025 SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES AND GREEN TRANSFORMATION Editors Yusuf KAYGISIZ Mehmet Fuat GÜLHAN Lyon 2025 Sustainability in Agriculture Smart Technologies and Green Transformation Editors • Prof. Dr. Yusuf KAYGISIZ • Orcid: 0000-0002-2143-5965 • Prof. Dr. Mehmet Fuat GÜLHAN • Orcid: 0000-0003-4838-1597 Cover Design • Motion Graphics Book Layout • Motion Graphics First Published • October 2025, Lyon e-ISBN: 978-2-38236-922-7 DOI: 10.5281/zenodo.17382101 copyright © 2025 by Livre de Lyon All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the Publisher. The author or authors of the relevant section are responsible for any copyright infringement that may occur due to the images and graphics used in the book. The editor or publisher does not assume responsibility in this regard. Publisher • Livre de Lyon Address • 37 rue marietton, 69009, Lyon France website • http://www.livredelyon.com e-mail • [email protected] I PREFACE In today’s world, global challenges such as population growth, climate change, depletion of natural resources, and environmental pollution have made a profound transformation in the agricultural sector inevitable. The book titled “Sustainability in Agriculture: Smart Technologies and Green Transformation” aims to present the fundamental principles of sustainable agriculture, current technological innovations, and environmentally friendly production approaches from an interdisciplinary perspective. The first chapter, “Green Technologies in the Food Processing Industry,” examines eco-friendly technologies that enable energy, water, and raw material savings in food production processes. The second chapter, “Microbiome and Environmental Sustainability,” discusses the functional importance of microbial communities in agricultural ecosystems and their role in enhancing soil biological productivity. The third chapter, “Agricultural Sustainability and Biodiversity Perspective: Pollination,” explores the vital role of pollinators in maintaining ecosystem balance and ensuring agricultural productivity. The fourth chapter, “Water Quality Indices in Agricultural Irrigation Approaches: Applications and Future Perspectives,” presents new evaluation criteria and technologies for optimizing water use in agricultural irrigation systems. The fifth chapter, “Feeds in Sustainable Agriculture,” focuses on the development of environmentally friendly and resource-efficient feed sources, addressing the integration of circular economy principles into livestock production. The sixth chapter, “Reducing Food Waste in Sustainable Agriculture: Utilizing Root Vegetable Peels in Food Applications,” introduces innovative ways to revalue agricultural by-products, reducing waste while creating added value in food systems. The seventh chapter, “Agrotourism and Sustainability: New Approaches in Rural Development,” highlights models that link agriculture with tourism to strengthen local economies and promote sustainable rural growth. The eighth chapter, “Genetic Modifications and Biotechnological Applications Shaping the Future of Food,” evaluates the contributions of modern biotechnology and genetic engineering in enhancing food quality, safety, and sustainability. The ninth chapter, “Smart Technologies in Agriculture,” investigates how digital innovations such as artificial intelligence, sensors, data analytics, and automation are revolutionizing agricultural practices to improve efficiency and reduce environmental impact. Finally, the tenth chapter, “Use of Renewable Energy II   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . Resources in Sustainable Agriculture,” explores the potential of solar, wind, and biomass energy in agricultural production, emphasizing their importance in building an energy-resilient and sustainable future. This book serves as a comprehensive resource not only for researchers, academics, and students but also for policymakers and practitioners seeking to develop sustainable production strategies. Each chapter has been prepared by experts in their respective fields, providing science-based insights, practical applications, and forward-looking perspectives to guide readers toward sustainable agricultural transformation. The future of agriculture will rise at the intersection of technology, science, and environmental awareness. We believe this work will contribute significantly to building a sustainable agricultural system on the path toward green transformation. Editors Professor Yusuf KAYGISIZ Professor Mehmet Fuat GÜLHAN III CONTENTS PREFACE I CHAPTER I. GREEN TECHNOLOGIES IN THE FOOD PROCESSING INDUSTRY 1 Ayhan DURAN CHAPTER II. MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY 15 MehmetEminDİKEN&SerapDOĞAN CHAPTER III. AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE: POLLINATION 35 Mikail AÇAR CHAPTER IV. WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION: APPROACHES, APPLICATIONS, AND FUTURE PERSPECTIVES 63 AlperALVER&EmineBAŞTÜRK CHAPTER V. FEEDS IN SUSTAINABLE AGRICULTURE 87 SelimSIRAKAYA CHAPTER VI. REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING ROOT VEGETABLE PEELS IN FOOD APPLICATIONS 103 AycaGÜLHAN CHAPTER VII. AGROTOURISM AND SUSTAINABILITY: NEW APPROACHES IN RURAL DEVELOPMENT 121 EdaÖZGÜLKATLAV&NeşeÇULLUKAYGISIZ CHAPTER VIII. GENETIC MODIFICATIONS AND BIOTECHNOLOGICAL APPLICATIONS SHAPING THE FUTURE OF FOOD 141 MehmetFuatGÜLHAN CHAPTER IX. SMART TECHNOLOGIES IN AGRICULTURE 161 NihatÇABUK&SeyitAliDURSUN CHAPTER X. USE OF RENEWABLE ENERGY RESOURCES IN SUSTAINABLE AGRICULTURE 183 YusufKAYGISIZ&SelimSIRAKAYA GREEN TECHNOLOGIES IN THE FOOD PROCESSING INDUSTRY   7 exacerbating issue of climate change, which has precipitated a joint endeavour by industry and academia to identify a novel generation of ‘green’ solutions that will facilitate the harmonisation of productivity and sustainability. This quest has also triggered a fundamental transformation in food processing technologies. Green food refers not only to the final product but to an entire system commencing with sustainable agriculture, operating on circular economy principles, and reaching the consumer with minimal environmental impact. The innovative processing technologies that underpin this system aim to ensure food safety while simultaneously safeguarding planetary health. 9. Green Technologies Used in the Food Processing Industry 9.1.Ozone Ozone (O₃) is an unstable and highly reactive gas composed of three oxygen atoms. The substance’s oxidation capacity is a key factor in its effectiveness, which is evidenced by its ability to inactivate bacteria, mould, yeast and viruses. The substance is employed within the food industry in the form of gas or ozonated water. It is particularly effective in applications such as surface and water disinfection, the purification of storage atmospheres and the sterilisation of packaging. The most significant benefit of this material is that it rapidly reverts to oxygen (O₂) after application, leaving no chemical residue. This property renders the product a sustainable alternative to traditional disinfectants such as chlorine. The study also demonstrates the potential efficacy of the process in the breakdown of pesticide residues and mycotoxins. 9.2.PulsedElectricField(PEF) Pulsed Electric Field (PEF) technology is predicated on the principle of applying high-voltage electrical pulses to food at the millisecond or microsecond level. The application of these pulses leads to the formation of pores in the cell membranes of microorganisms or plant tissues, thereby enhancing permeability. The duration of these pores can be either permanent or temporary. This process has been shown to significantly increase juice and oil yield by facilitating the release of intracellular material. Furthermore, it is employed in the process of pasteurisation, where it serves to inactivate pathogenic microorganisms. The absence of a requirement for heat treatment ensures the preservation of the food’s natural aroma, colour and nutritional value. Furthermore, this method of processing results in significant energy savings (Toepfl et al., 2014). 8   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . 9.3.OhmicHeating The principle behind ohmic (or resistive) heating is the production of heat energy volumetrically (throughout the entire volume) via the foodstuff’s own electrical resistance by passing an alternating electric current directly through the food. In contradistinction to conventional heating methods, which facilitate heat transfer from one surface to another, this process occurs in a highly efficient and homogeneous manner. This feature confers a substantial advantage, particularly in the thermal processing of particulate and high-viscosity foods (e.g., soups, fruit purées, jams). The absence of surface burning (fouling) is a notable feature, as is the high level of energy efficiency. Furthermore, the loss of nutrients in food is minimised, which is a significant advantage (Knirsch et al., 2010). 9.4.Photodisinfection Photodisinfection is an antimicrobial process based on the principle that a substance called a ‘photosensitiser’ is able to produce reactive oxygen species (ROS) when exposed to light of a specific wavelength (usually in the visible spectrum). These ROS oxidise and damage cellular components (particularly cell membranes). This method is distinguished by its high degree of specificity and precision. The process does not necessitate the application of heat and results in negligible alterations to the physicochemical properties of foodstuffs. The product has been identified as having significant potential for use in food surface disinfection, the packaging industry, and the food service sector for disinfection purposes. 9.5.Ultraviolet(UV)Radiation Ultraviolet radiation (UV-C rays, 200-280 nm) has been shown to inactivate microorganisms by causing damage to their DNA. Its application is extensive, encompassing surface disinfection of liquid foods (e.g. milk, fruit juice, syrup), sterilisation of packaging materials and process equipment, and drinking water purification. The technology is notable for being free from chemicals, operating at low temperatures, and having a relatively simple installation process. The effectiveness of the process may be influenced by factors such as the turbidity of the food and its UV light transmittance, thus emphasising the importance of process design. 9.6.HighPressureProcessing(HPP) High Pressure Processing (HPP) is a method of food preservation that involves the application of very high hydrostatic pressure (100-600 MPa) to GREEN TECHNOLOGIES IN THE FOOD PROCESSING INDUSTRY   9 foodstuffs using water at conditions close to room temperature (or cold). This pressure inactivates microorganisms by disrupting their cell membranes and enzyme structures, thereby extending shelf life. The principal benefit of this process is that, due to the absence of heat application, the nutritional value, colour, aroma and freshness of the food are almost entirely preserved. This has led to a paradigm shift in the realm of food production, particularly in the domains of high-value-added, minimally processed, and clean-label products. This transformation is exemplified by the emergence of ready meals, meat products, fruit juices, salsa, and avocado products (guacamole), among others (Huang et al., 2020). 9.7.Ultrasonic(US)Process The ultrasonic process entails the application of high-frequency sound waves, with a frequency exceeding 20 kHz, to the food matrix. The phenomenon of ‘cavitation’ is caused by these waves, resulting in the formation and violent collapse of microscopic bubbles in liquids. The elevated temperatures, pressures and shear forces engendered thereby greatly enhance the efficiency of extraction, homogenisation, drying and emulsification processes. It has been demonstrated that the process may also induce a mild pasteurisation effect. The technology is sustainable due to its potential to shorten process times, improve energy efficiency and reduce the use of chemical solvents (Chemat et al., 2019). 9.8.Nanotechnology The field of food nanotechnology encompasses the development and application of materials and structures at the nanometre scale (1-100 nm). This technology finds application in numerous areas of the food industry, including active and smart packaging (the antimicrobial effect of nano-silver), increasing the bioavailability of nutraceuticals (nano-encapsulation), enhanced sensory properties (nano-emulsions) and food safety sensors. The field of nanotechnology has the potential to contribute to sustainability by reducing food waste and enabling the development of functional foods. Nevertheless, ongoing research is being conducted regarding the toxicological safety and regulations of these substances (Sekhon, 2014). 9.9.MicrowaveProcessing The microwave processing of foodstuffs is based on the conversion of electromagnetic energy into heat energy, a process facilitated by the dielectric properties of the foodstuffs in question. In contrast to conventional methods, 10   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . which rely on conduction from the surface to the centre of the food, this innovative approach produces heat almost simultaneously throughout the entire volume of the food. This has been shown to reduce heating time, increase energy efficiency, and ensure a more homogeneous product quality. Its utilisation is extensive in a variety of culinary practices, as well as in the processes of pasteurisation, sterilisation, drying, and thawing. In the process of drying, in particular, it has been demonstrated to produce results in a significantly reduced timeframe, whilst maintaining a superior quality standard in comparison to conventional methodologies (Chandrasekaran et al., 2013). 9.10.SupercriticalFluidProcessing The process of supercritical fluid processing entails the utilisation of a substance as a solvent, with the substance being elevated to a temperature and pressure that exceed its critical values, thereby transitioning into a distinct phase known as the supercritical phase. The most prevalent supercritical fluid is carbon dioxide (SC-CO₂), which possesses low critical values and is non-toxic. SC-CO₂ exhibits the solvent power of liquids and the low viscosity/high diffusion coefficient of gases. It has been demonstrated that, due to the presence of these properties, the process exhibits a high level of efficiency and selectivity in the extraction of oils, aromas and bioactive compounds (such as antioxidants) from plant materials. Furthermore, the process has been shown to be effective in the decaffeination of coffee and the inactivation of microorganisms. As a consequence of the process culminating in the reversion of CO₂ to its gaseous state, the presence of any solvent residues is precluded within the food, thus rendering the process both safe and environmentally friendly (Chemat et al., 2019). 10. The Shared Benefits of Green Technologies and Their Contributions to Sustainability The green technologies enumerated above offer a number of common advantages over traditional processing methods, thereby making significant contributions to the sustainability of the food system. 10.1.EnergyEfficiency The functionality of technologies such as PEF, ohmic and microwave heating is predicated on the principle of generating heat directly within the foodstuff itself, as opposed to the more traditional approach of transferring heat externally. This has been shown to reduce the time taken for heating to GREEN TECHNOLOGIES IN THE FOOD PROCESSING INDUSTRY   11 occur, whilst concomitantly reducing energy consumption. Furthermore, both ultrasound and HPP require less energy than traditional methods. 10.2.PreservationofNutritionalValueandNaturalness Non-thermal technologies such as HPP, UV and ozone have been shown to preserve the natural and nutritious properties of food, including vitamins, antioxidants, colour and aroma, to a greater extent than thermal processing. This facilitates the development of ‘clean label’ and minimally processed products, which are in demand among consumers. 10.3.ReducedChemicalUse Ozone and UV have been shown to provide a powerful alternative to chemical disinfectants (e.g., chlorine). The process of supercritical fluid extraction is notable for its ability to eliminate the use of organic solvents. The utilisation of nanotechnology in the field of packaging has been demonstrated to diminish the necessity for the direct addition of preservatives to foodstuffs. 10.4.WasteandWaterManagement The utilisation of ultrasound and PEF has been demonstrated to enhance extraction and pressing efficiency, thereby reducing plant waste. The utilisation of ozonated water facilitates the repeated reuse of water for disinfection purposes, thereby leading to a reduction in water consumption. These technologies are instrumental in achieving the objectives of a ‘zero waste’ and ‘circular economy’ paradigm. Table 2: Comparison of Processing Technologies Technology Water Use (L/kg) Energy Use (kWh/kg) Waste Generation (g/kg) Conventional Thermal 3.2 1.8 120 PEF 1.1 0.9 45 UV-C 0.8 0.6 30 11. Recommendations for Industrial-Scale Deployment Despite the proven success of these technologies at laboratory scale, significant obstacles remain to their industrial adaptation, including high 12   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . investment costs, scaling-up difficulties, and the need for skilled labour. In order to surmount these obstacles and expedite the green transition, it is essential to: 1. The utilisation of financial incentives by governments to encourage SMEs to invest in the aforementioned technologies is a key consideration. The provision of grants and low-interest loans is a recommended course of action. 2. Academia-Industry Collaborations: The undertaking of joint R&D projects is recommended in order to optimise technologies under real industrial conditions and conduct scaling-up studies. 3. Life Cycle Assessment (LCA): The environmental impact of each technology should be quantitatively determined through Life Cycle Assessment (LCA) studies covering the entire ‘farm-to-fork’ process, and its true ‘green’ effect should be proven. 4. Regulation and Consumer Acceptance: It is incumbent upon food safety authorities to establish a clear and science-based regulatory framework for these innovative technologies. Concurrently, consumers must be made aware of the safety and benefits of these technologies. 12. Conclusion In conclusion, the integration of green technologies into the food processing industry represents a fundamental and necessary evolution towards achieving a sustainable and secure global food system. As delineated in this article, these technologies—ranging from non-thermal preservation methods like High-Pressure Processing and Pulsed Electric Fields to advanced extraction techniques using supercritical fluids and ozone-based disinfection—offer a multifaceted solution to the environmental challenges posed by conventional practices. Their collective benefits are profound: a significant enhancement in energy and water efficiency, a marked reduction in chemical use and waste generation, and the superior preservation of nutritional and sensory qualities in food products. The transition to these technologies is not merely a technical upgrade but a holistic transformation that encompasses sustainable agricultural production, optimized supply chains, and informed consumption. However, to fully realize this potential, concerted efforts are required from policymakers, industry stakeholders, and the scientific community. Overcoming barriers related to high initial investment, scaling-up difficulties, and regulatory frameworks is crucial. Strategic policies, including financial incentives for small and mediumsized enterprises, robust academia-industry collaborations, and science-based GREEN TECHNOLOGIES IN THE FOOD PROCESSING INDUSTRY   13 regulations, are essential to accelerate adoption. Ultimately, embracing green technologies is an strategic investment in planetary health and long-term food security. The evidence presented affirms that the future of food processing must be inherently green, efficient, and circular, ensuring that the system not only feeds the population but also nurtures the planet. References Aragón, F. M., Oteiza, F., & Rud, J. P. (2021). Climate change and agriculture: Subsistence farmers’ response to extreme heat. American Economic Journal: Economic Policy, 13(1), 1-35. Bibi, F., & Rahman, A. (2023). 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Research in Globalization, 7, 100168. 15 CHAPTER II MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY Mehmet Emin DİKEN1 & Serap DOĞAN2 1(Associate Professor) Science and Art Faculty, Deparment of Molecular Biology and Genetic, Balikesir University, Balıkesir, Türkiye [email protected], ORCID:0000-0003-3349-939X 2(Professor) Science and Art Faculty, Deparment of Molecular Biology and Genetic, Balikesir University, Balıkesir, Türkiye [email protected] ORCID: 0000-0001-5684-3662 1. Introduction Microorganisms have a decisive impact on ecosystems and play a role in regulating a wide variety of biological processes. The concept of the microbiome, which encompasses microorganisms and their genetic material in a specific environment, has been the subject of intensive research in recent years. Elucidating the diversity and structure of microbial communities is critical to understanding both the functionality of ecosystems and their responses to environmental changes The continuous expansion of the global population has heightened concerns regarding food security, environmental sustainability, and the overall health of soil, water, and air systems. These challenges have encouraged the scientific community to seek innovative and sustainable strategies capable of balancing human needs with ecological integrity. Central to these efforts are the biogeochemical mineral cycles, which govern the transformation and movement of essential elements within ecosystems. As the foundational processes that 16   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . sustain the food chain, these cycles regulate nutrient availability, productivity, and energy flow in both natural and managed environments. A deeper understanding of mineral cycling not only provides insight into ecosystem functioning but also forms a cornerstone for developing resilient and sustainable solutions in agriculture, resource management, and environmental conservation(Thaku et al., 2023; Jansson et al., 2023). Soil harbors an extraordinarily diverse assemblage of microorganisms, including bacteria, archaea, fungi, protists, and their associated viruses. These microbial groups form dynamic and interactive communities that are fundamental to maintaining ecosystem stability and function. Through complex biochemical and ecological interactions, soil microorganisms regulate essential processes such as carbon and nutrient cycling, plant growth promotion, and degradation of organic and inorganic pollutants. Within these communities, certain microbial taxa act as keystone species, performing critical roles that sustain agricultural productivity and ecological balance. For instance, specific rhizobial species are capable of fixing atmospheric nitrogen, converting it into bioavailable forms that support plant and microbial growth. Other microorganisms mediate various stages of the nitrogen cycle and contribute to the transformation of other vital nutrients. In addition, many soil microbes participate in the decomposition of carbon-rich organic matter, facilitating soil carbon turnover and humus formation(Thaku et al., 2023; Jansson et al., 2023). Despite these well-recognized contributions, the functional diversity of most soil microorganisms remains poorly characterized. This knowledge gap arises from the inherent complexity of the soil environment, including its heterogeneous physical structure, immense taxonomic and chemical diversity, and the microscale spatial organization at which microbial interactions occur. Moreover, the majority of soil microorganisms are not yet amenable to cultivation under laboratory conditions, rendering their physiological traits and ecological functions largely unknown. These uncultured microbial populations represent an immense, untapped biological resource, with the potential to uncover novel functions that could advance sustainable agriculture, nutrient management, and ecosystem resilience(Jansson et al., 2023). The study of microbiomes plays a key role in creating robust ecosystems and developing green technologies that support sustainability. The discovery of the diversity and functions of microorganisms has the potential to offer innovative solutions to current environmental problems. For example, microorganisms are essential components of healthy soils that drive the nutrient cycle. A vibrant MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY   23 as rhizodeposition(Azevedo et al., 2024). In marine systems, the microbial loop recycles dissolved organic matter into biomass, retaining carbon within ocean ecosystems. Microbial processes transform inert N₂ into bioavailable forms and regulate its redox cycling. Diazotrophic microbes fix atmospheric nitrogen, while nitrifiers and denitrifiers convert ammonia through nitrite and nitrate to gaseous N forms, closing the nitrogen cycle. Anammox and related pathways further contribute to nitrogen loss under anaerobic conditions. Collectively, these reactions maintain ecosystem nutrient balance and productivity.C and N cycles are tightly coupled through microbial metabolism. Decomposition of carbon-rich matter releases nitrogen for recycling, while root microbe interactions enhance both carbon mineralization and nitrogen assimilation. Environmental factors such as pH, temperature, and moisture modulate these linked processes, influencing greenhouse gas emissions (CO₂, CH₄, N₂O) and nutrient retention(Yan et al., 2025). Microbial regulation of C and N dynamics affects soil fertility, plant productivity, and atmospheric composition. Microbial decomposition and SOM stabilization form one of Earth’s largest carbon sinks, while nitrogen transformations sustain primary productivity. However, imbalances in these processes can enhance greenhouse gas emissions, emphasizing the need to understand microbial feedbacks in climate models(Jansson and Hofmockel, 2020). Omics technologies have revealed the genetic and metabolic foundations of microbial nutrient cycling. Integrative, multi-omics, and systems biology approaches now connect microbial genes with ecosystem-scale processes, improving predictive models of biogeochemical function. Future research should link molecular mechanisms with global nutrient fluxes and explore microbiome management to enhance carbon storage, nitrogen efficiency, and ecosystem resilience under climate change. Microbiomes orchestrate the transformation, storage, and flux of carbon and nitrogen across ecosystems. Their metabolic diversity and adaptability underpin soil fertility, ecosystem stability, and climate regulation. Understanding and harnessing microbial functions through integrative research is essential for developing sustainable strategies to mitigate climate change and preserve global biogeochemical balance(Aghdam et al., 2021). 5. Ecosystem resilience against environmental stresses Ecosystem resilience to environmental stresses refers to the ecosystem’s capacity to resist, recover from, and adapt to disturbances. This resilience 24   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . is determined by the interaction of multi-scale factors such as disturbance frequency, spatial impact area, and individual species characteristics, thereby ensuring the continuity of ecosystem functions (Chambers et al., 2019; Rebecca et al., 2019). To increase resilience, multi-scale and organism-focused management approaches supported by spatial data are of vital importance. Functional redundancy, habitat heterogeneity, and connectivity are key elements that enhance ecosystems’ capacity to recover from disturbances(Chambers et al., 2019; Falk et al., 2019). Ecosystem resilience is influenced by a complex interplay of biotic and abiotic factors. Key attributes include the ability of an ecosystem to resist environmental perturbations and its recovery speed following disturbances. Researchers suggests that climatic conditions, such as local rainfall and water deficit, significantly affect resilience. Higher rainfall leads to better recovery rates of ecosystems after disturbances, indicating that managing climatic parameters and understanding the frequency of disturbances are critical for enhancing ecosystem resilience(Gaete et al., 2018; Peterson et al., 2018; Willis et al., 2018). The resilience of ecosystems varies depending on different types of vegetation cover. For example, disturbances caused by fires increase the resilience of tropical grasslands by preventing the encroachment of forests. Among the characteristics that increase the resilience of ecosystems are the importance of species wood density, root depth, and leaf area index. Additionally, soil type and subsurface processes are also important factors in resilience, and these issues are directly relevant to management practices. Higher biological diversity provides greater resilience to environmental disturbances because a greater number of species are available to take over the functions of lost species(Kristensen et al., 2020). Ecosystem resilience against environmental stresses is crucial and can be enhanced through understanding various scales and attributes. Disturbance frequency and spatial extent play significant roles in a species’ colonization potential and overall resilience. The traits of species at the population scale, such as age to maturity and occupancy, influence recovery from disturbances. Resilience is further affected by community-level attributes, including species richness within functional groups, which must also contain diverse tolerances to environmental disturbances. As disturbances increase in extent or frequency, resilience traits shift from landscape-scale recovery attributes to individual species resistance characteristics. Therefore, managing biodiversity and enhancing species richness in relation to their ecological traits can improve an ecosystem’s ability to withstand and recover from stress. MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY   25 6. Microbiomes in Sustainability Microbiomes play a crucial role in promoting sustainability, particularly in agriculture and environmental health. Their application enhances food security, improves soil health, and reduces dependence on chemical inputs. By harnessing the power of beneficial microorganisms, sustainable practices can be developed that not only increase agricultural productivity but also maintain ecological balance. Microbiomes improve crop resilience and nutrient absorption, leading to higher yields (Hazmi et al., 2025). They facilitate plant growth through mechanisms such as nutrient solubilization and the production of growthpromoting substances (Suman et al., 2022). The use of biofertilizers derived from beneficial microbes can enhance soil fertility and minimize the need for synthetic fertilizers (Suman et al., 2022). In addition to their agricultural applications, microbial technologies contribute to bioremediation, helping to clean up heavy metals and organic pollutants (Kumar & Singh, 2020). They also promote soil biodiversity, which is essential for maintaining healthy ecosystems and reducing greenhouse gas emissions (Hazmi et al., 2025). Indigenous microorganisms can further be utilized in wastewater treatment and other environmental applications, supporting broader sustainable development goals (Kunwar et al., 2021). Beyond environmental and agricultural domains, microbiomes hold broader implications for human health and well-being. The integration of microbiomes into agricultural systems not only supports food security but also enhances nutritional quality and reduces chemical exposure, thereby contributing to better human health outcomes (Suman et al., 2022). Moreover, probiotic microbes are increasingly recognized for their beneficial roles in promoting gut health and overall wellness, highlighting the growing intersection between microbiome research and public health (Suman et al., 2022). Despite their vast potential, challenges remain in realizing the full benefits of microbiomes, particularly in regions with limited research infrastructure and application capacity, such as Sub-Saharan Africa (Ojija et al., 2022). Addressing these gaps through targeted research, technology transfer, and policy support is essential for maximizing the contribution of microbiomes to global sustainability efforts. Biotechnological applications can significantly enhance the utilization of microbiomes within the circular economy by promoting sustainable practices, resource efficiency, and waste reduction. Through the strategic harnessing of beneficial microbes, industries can transform waste streams into valuable products, contributing to a regenerative and resource-efficient economic system. Beneficial microbes can be engineered using precision biotechnology 26   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . to optimize resource utilization, enhance agricultural productivity, and reduce dependence on synthetic fertilizers (Singh et al., 2024). Microbiome engineering has further demonstrated the potential to develop nitrogen-fixing microbial communities from waste-derived carbon sources, resulting in biofertilizers that outperform conventional approaches (Rodríguez-Romero et al., 2025). Beyond agriculture, microbial biotechnology plays a vital role in wastewater treatment by converting pollutants into clean water and recoverable materials, thereby supporting bioenergy production (Gallo et al., 2023; Nielsen, 2017). Advanced omics technologies have also facilitated a deeper understanding of microbial community dynamics, significantly improving the efficiency of wastewater treatment and resource recovery processes (Gallo et al., 2023). Moreover, microbiome-based innovations align closely with the “Reduce, Recycle, Reuse” (3R) principles that underpin the circular bioeconomy. The application of microorganisms and algae can effectively minimize waste generation and maximize bioresource recovery, promoting environmentally responsible production cycles (Dahiya et al., 2022). Specific microbial strains have shown the capacity to increase yields in both agricultural and bioconversion systems, further advancing the development of sustainable circular biotechnologies (Dahiya et al., 2022). Despite the numerous benefits of integrating microbiomes into the circular economy, several challenges persist, including regulatory barriers and the need for greater public acceptance of biotechnological innovations. Addressing these challenges through informed policy frameworks, public engagement, and continued research will be essential for realizing the full potential of microbiome-driven circular economy solutions. 7. Microbial Communities and Bioremediation Microbial communities are integral to maintaining ecological balance and enhancing environmental resilience. Beyond their roles in nutrient cycling and ecosystem stability, these microorganisms serve as powerful agents of bioremediation processes that harness microbial metabolism to detoxify polluted environments. Their capacity to transform or immobilize contaminants underpins sustainable environmental management and aligns closely with circular economy principles, where biological systems contribute to waste valorization and resource recovery. Microbes, including bacteria, fungi, and algae, exhibit remarkable metabolic diversity that enables them to degrade, transform, or sequester a wide range of pollutants. By converting hazardous substances into less toxic MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY   27 forms, these organisms mitigate anthropogenic stress and restore ecosystem functionality(Harshvardhan and Saikia, 2022). Understanding the underlying mechanisms and application methods of microbial bioremediation is therefore essential for optimizing their role in environmental sustainability. Through enzymatic oxidation and reduction processes, microorganisms metabolize organic pollutants and convert them into environmentally benign end products such as carbon dioxide and water (Tandel et al., 2024). This mechanism is a cornerstone of natural attenuation in soils and aquatic systems, especially for hydrocarbons, pesticides, and other persistent organic compounds. Acidophilic microorganisms facilitate the mobilization of metals from contaminated substrates by generating organic and inorganic acids (Poornima et al., 2024). This process not only supports the detoxification of mining residues but also contributes to metal recovery within resource-efficient biotechnological frameworks. Certain algae and fungi can bind and accumulate heavy metals via cell wall functional groups or intracellular sequestration (Su et al., 2023). These mechanisms play a vital role in reducing metal bioavailability and preventing secondary contamination within trophic networks. The use of mixed microbial communities enhances degradation efficiency through synergistic metabolic interactions (Sama et al., 2023). Such consortia mimic natural ecological networks, enabling the sequential breakdown of complex pollutants and reinforcing microbial stability under variable environmental conditions. Bioaugmentation involves the intentional introduction of pollutantdegrading microbes into contaminated ecosystems, while biostimulation enhances the activity of indigenous microbial populations through nutrient or electron donor supplementation (Harshvardhan and Saikia, 2022). Both strategies aim to accelerate the inherent bioremediation potential of the microbiome. The success of bioremediation is deeply intertwined with ecosystem resilience. Microbial networks that withstand environmental perturbations maintain biogeochemical equilibrium and support natural recovery processes following contamination. Moreover, when integrated into circular economy models, microbial bioremediation aligns with principles of waste-to-resource transformation, minimizing environmental impact while recovering valuable elements from waste streams. Advances in systems biology, metagenomics, and synthetic ecology now allow for the precise characterization and engineering of these microbial communities, paving the way for scalable and environmentally adaptive 28   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . bioremediation technologies. Despite its promise, microbial bioremediation faces challenges such as the limited predictability of microbial interactions, potential ecological risks associated with introducing exogenous species, and fluctuating environmental conditions that affect microbial activity. Addressing these limitations requires a systems-level understanding of microbial ecology supported by multiomics analyses and in situ monitoring tools. Future approaches should focus on the integration of bioremediation with ecosystem-based management frameworks and circular bioeconomy strategies. Doing so will enhance both environmental restoration capacity and the sustainable reuse of biological resources. 8. Integration of AI and Next-Generation Sequencing in Microbiome Research As the landscape of microbiome research evolves, the integration of machine learning and artificial intelligence into the analysis of sequencing data is becoming increasingly significant. These technologies not only enhance the ability to interpret complex datasets generated by next-generation sequencing but also hold the potential to uncover novel microbial interactions and functions that may have previously gone unnoticed. For instance, recent studies have demonstrated how machine learning algorithms can improve the accuracy of taxonomic classification and functional prediction, leading to more reliable insights into the microbiome’s role in health and disease (Котелянець, 2022) Furthermore, this shift towards computational methods raises important questions about the reproducibility of findings, as the reliance on algorithmic interpretations can introduce variability that complicates comparisons across studies (Clooney et al, 2016). As researchers continue to refine these approaches, the future of microbiome research may hinge on the synergy between biological data and computational power, paving the way for groundbreaking discoveries in microbial ecology and its implications for human health. Defined as a suite of advanced sequencing methodologies, The advent of Next-Generation Sequencing (NGS) encompasses techniques such as amplicon sequencing and metagenomics, which collectively enable researchers to explore the genetic material of entire microbial populations, rather than relying on traditional culture-based methods. The historical evolution of sequencing technologies has paved the way for these innovative approaches, significantly enhancing our understanding of microbial diversity, functional capabilities, and their implications for health and disease (Cao et al., 2017; De et al., 2015). The role of NGS in metagenomics is particularly noteworthy, as it allows for the comprehensive analysis of genetic material obtained directly MICROBIOME AND ENVIRONMENTAL SUSTAINABILITY   29 from environmental samples, thereby revealing the intricate relationships and interactions within microbial ecosystems. Furthermore, the application of NGS in amplicon sequencing will be examined, showcasing its utility in microbiome research, particularly in understanding microbial diversity and host interactions(Thakkar et al., 2017). Despite the numerous benefits of NGS, challenges and limitations persist, including data analysis complexities and ethical considerations that warrant careful attention. As we look to the future, emerging trends and potential innovations in NGS technologies promise to further enhance our capabilities in microbiome research, fostering a deeper understanding of microbial roles in health, disease, and environmental sustainability(Winder et al., 2025). NGS technologies play a key role in the development of metagenomic research, and different platforms offer significant diversity in terms of read length, accuracy rate, cost, and ease of analysis. Illumina sequencing technology is one of the most widely used methods in microbiome research due to its high accuracy and efficiency. The Ion Torrent system offers advantages in terms of quick results and affordability, but it can produce errors in homopolymer regions. Roche 454 technology, which was important in the past, attracted attention with its medium-to-long read capacity, but is not used today due to its high cost. Although the SOLiD platform has a very high accuracy rate, it has limited applications due to short read lengths and complex analysis processes. PacBio SMRT and Oxford Nanopore technologies, which stand out with their long read capacity, offer great advantages in deciphering the complex structure of microbial communities. PacBio has the ability to produce high-accuracy long reads, while Oxford Nanopore enables real-time data acquisition with its ultralong read and portable device advantages(Quail et al., 2012; Hu et al., 2021). However, both systems present challenges such as relatively high cost and error rates. Therefore, the choice of which NGS platform to use in metagenomic studies is determined by factors such as the purpose of the research, sample type, targeted data depth, and budget. 9. Conclusion In conclusion, the integration of advanced sequencing technologies and artificial intelligence has opened a new era in understanding the complexity and functionality of microbiomes within natural and managed ecosystems. The synergistic application of NGS platforms, multi-omics approaches, and machine learning algorithms now allows researchers to decode the intricate microbial 30   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . networks that underpin ecosystem stability, nutrient cycling, and environmental resilience. However, realizing the full potential of these innovations requires bridging computational predictions with ecological and biochemical validation. Future research should emphasize the integration of multi-scale datasets, from molecular to ecosystem levels, to establish predictive frameworks that can inform sustainable management practices. Furthermore, fostering interdisciplinary collaboration between microbiologists, data scientists, and environmental engineers will be critical for translating microbiome knowledge into actionable strategies that promote food security, climate mitigation, and circular bioeconomy principles. 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AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE . . .   39 Pollination is essential not only for the reproduction of individual plant species but also for maintaining genetic diversity, functionality, and stability in ecosystems. The complex mutualistic interactions between flowering plants and pollinators are indispensable for biodiversity conservation and sustainable agricultural production (Richards, 2001; Ellis, 2023; Ollerton et al., 2011). Pollinators also have substantial economic importance: approximately 35% of global agricultural production relies directly on pollinators, influencing numerous staple crops and medicinal plants. For example, honeybees contribute to agricultural pollination valued at $14.6 billion annually in the USA and €4.25 billion in Europe (Kevan, 1999; Potts et al., 2003; Borneck & Merle, 1989 as cited in Gupta et al., 2014). Declines in pollinator populations can reduce seed production and crop yield, posing a “pollination crisis” risk (Buchmann & Nabhan, 1996; Partap & Partap, 2002). Modern agricultural practices, climate change, habitat loss, pesticide use, and monoculture cultivation reduce pollinator diversity and efficiency, imposing constraints on agricultural production. Conserving semi-natural areas, enhancing habitat diversity, and integrating wild pollinator management are critical for sustainable pollination and agricultural productivity (MacLeod, 1999; Dover & Sparks, 2000; Richards, 2001). 40   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . Figure 1. Different pollinators observed on flowering plants 4. The Relationship Between Agricultural Production and Pollination Agricultural production must be conducted using sustainable methods to satisfy the growing need for nourishment. In this context, pollination is a fundamental ecological service that directly influences plant reproductive AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE . . .   41 success, playing a critical role in yield, product quality, and genetic diversity (IPBES, 2016). Most crops are pollinated by insects, birds, and other animals; therefore, the continuity of agricultural production systems depends on pollinator populations (Garibaldi et al., 2013). Approximately one-third of globally cultivated crops require biotic pollination, highlighting the economic value of pollinators (Klein et al., 2007; Gallai et al., 2009; Aizen et al., 2008). Pollination affects not only quantity but also quality, nutritional value, and commercial worth, providing direct economic benefits, especially in fruits, vegetables, oilseeds, and fodder crops (Klein et al., 2007; Brittain et al., 2014). Both wild and managed pollinators contribute complementary functions to agricultural productivity. While honeybees (Apis mellifera) provide a significant portion of pollination, other species such as wild bees, flies, butterflies, and birds enhance production stability and act as buffers when colonies are insufficient (Garibaldi et al., 2013; Winfree et al., 2008; Rader et al., 2016). Species richness and niche complementarity, along with synergistic effects and the presence of efficient pollinators, strengthen crop yield and sustainability (Garibaldi et al., 2018). Pollinator diversity also supports the “response diversity” mechanism, increasing the stability of ecosystem services against environmental changes (Garibaldi et al., 2018). Modern agricultural practices, monoculture cultivation, pesticide and fertilizer use, and mechanization negatively affect pollinator populations, while habitat fragmentation and reduced floral diversity lower crop productivity (Goulson et al., 2015; Potts et al., 2016). Neonicotinoids and other agricultural chemicals impair bees’ navigation, reproductive success, and immune systems, weakening colonies (Goulson, 2013; Woodcock et al., 2017; Van der Sluijs, 2020; Ellis, 2023). Therefore, implementing pollinator-friendly farming practices alongside integrated pest management (IPM) is crucial (Kremen & Miles, 2012). In agroecosystems, pollination ecology examines how plant–pollinator interactions adapt to environmental and anthropogenic changes. Floral morphology, nectar guides, flowering phenology, and temporal separation of male and female phases optimize pollen transfer and cross-pollination (Kalpana et al., 2024). Pollination takes place through both abiotic means, such as wind and water, and biotic agents. Key biotic pollinators include bees, butterflies, moths, flies, birds, and bats, with bees considered particularly efficient because of their strong floral fidelity (Sihag, 1995; Eardley et al., 2006). Pollination deficit is defined as the gap between current pollen supply and the amount required for potential yield and is frequently observed in intensive 42   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . agricultural areas. Managed honeybee colonies can provide pollination, but alone they are insufficient; wild pollinators operate over larger areas, maintaining genetic diversity and ensuring pollination continuity (Garibaldi et al., 2018). Thus, preserving pollinator diversity is critical for agricultural sustainability and ecosystem service stability (IPBES, 2016; Potts et al., 2010). The annual economic contribution of pollination services is estimated to range from USD 235 to 577 billion (IPBES, 2016). The conservation of pollinators should be promoted through agroecological practices, diversified cropping systems, organic farming methods, and the establishment of habitats that support pollinator populations (Kremen et al., 2007; Nicholls & Altieri, 2013; Garibaldi et al., 2013; Dainese et al., 2019). These practices enhance both yield and product quality while supporting biodiversity, ecosystem functions, and agricultural sustainability (Tscharntke et al., 2012; Bommarco et al., 2013; Tuck et al., 2014; Kleijn et al., 2015; Letourneau et al., 2011). Social and economic benefits are also achieved, including income stability for farmers and community-based knowledge sharing, creating new market opportunities (Kremen & Miles, 2012; Ponisio et al., 2015; Pywell et al., 2015). In conclusion, pollination and pollinator conservation secure not only agricultural yield but also product quality, genetic diversity, ecosystem health, and economic stability. Pollination services should be optimized through the integration of wild and managed pollinators and supported with agroecological and sustainable farming practices (IPBES, 2016; Garibaldi et al., 2013; Kumar et al., 2024; Abrol, 2012; Singh, 2017; Kaur & Kaleka, 2022). 5. Threats to Pollinators Pollinators are vital for maintaining agricultural productivity as well as overall ecosystem services. In recent years, however, they have been exposed to numerous threats, including habitat loss, monoculture cultivation, pesticide application, climate change, diseases, parasites, and invasive species. Among these, neonicotinoids are some of the most extensively used insecticides worldwide, functioning systemically to protect the entire plant, particularly when applied as seed treatments. These neurotoxins are highly toxic to arthropods and effective for pest control. However, their widespread and prophylactic use is inconsistent with integrated pest management (IPM) principles and raises environmental concerns. Neonicotinoids can accumulate in soil, leach into water, and occur in nectar and pollen at levels toxic to beneficial organisms, negatively affecting bee colony reproduction. Birds and mammals may also ingest treated seeds, leading AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE . . .   43 to direct mortality. Contemporary practices pose risks to numerous non-target organisms, including pollinators as well as soil and aquatic invertebrates, thereby undermining ecosystem services (Goulson, 2013; IPBES, 2016). Long-term distribution analysis of butterfly species in the Netherlands reveals a significant decline. Between 1890–1930 and 1981–1990, the MultiSpecies Indicator (MSI) declined by 67%, with most of the 42 species lost from the country showing downward trends. Post-1992 monitoring indicates an additional 50% decline, with an estimated total reduction of approximately 84%. Losses occurred across meadows, forests, and heathlands, with declines continuing in heathlands. These findings emphasize pollinators’ high sensitivity to habitat loss and environmental change (Van Strien et al., 2019). Pollinators face a wide range of pressures, including habitat loss and fragmentation, intensive agricultural practices, monoculture cultivation, pesticide and fertilizer use, environmental pollution, invasive species, parasites, pathogens, and climate change. The lethal and sub-lethal effects of genetically modified organisms (GMOs) and pesticides—especially neonicotinoids— negatively affect the habitats, food resources, and overall health of both wild and managed pollinator populations. These factors threaten the continuity of pollination services in natural and agricultural ecosystems (Sánchez-Bayo & Wyckhuys, 2019; IPBES, 2016). In recent years, seasonal losses of Western honeybee colonies have increased, and notable declines have been observed in some bee and butterfly populations. Wild pollinators in Northwest Europe and North America are declining, and some managed colonies have also experienced reductions. According to the International Union for Conservation of Nature (IUCN), 16.5% of vertebrate pollinators are globally at risk of extinction, with this proportion reaching 30% on islands. Data on insect pollinators remain incomplete at the global level, complicating regional management plans and highlighting the importance of long-term monitoring (IPBES, 2016). Studies on nine crops across four continents indicate that agricultural intensification threatens wild bee populations and diminishes their capacity to provide effective pollination services (Klein et al., 2007). Both wild and managed pollinators are adversely impacted by habitat loss and fragmentation, exposure to agricultural chemicals (pesticides), pathogens, invasive species, and climate change. Parasites, such as Varroa destructor, have led to significant declines in wild honeybee colonies in Europe and the USA, leaving primarily beekeeper-managed colonies. This scenario presents serious threats to the longterm sustainability of pollination services (Potts et al., 2010). 44   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . Pollinators encounter numerous challenges, including the destruction of habitats, pesticide exposure, climate change impacts, disease pressures, and competition from invasive species. Habitat destruction eliminates both food resources and nesting sites. Monoculture farming reduces necessary floral diversity, disrupting ecological balance. Pesticides-particularly insecticidescause direct mortality, while fungicides and herbicides have indirect negative effects on pollinator health (Sihag, 1995). Global declines in honeybee colonies constitute one of the most critical threats to pollination services and sustainable agricultural production. In North America, Colony Collapse Disorder (CCD), first reported in 2006, has resulted in the loss of 30–50% of colonies (Yang & Cox-Foster, 2005; Cox-Foster et al., 2007; Stokstad, 2007). Multiple stressors contribute to CCD, including parasitic mites (Varroa destructor), pathogens (Nosema ceranae), viral, bacterial, and fungal diseases, pesticide poisoning, increased competition due to Africanized bee introduction, hybridization, and intensive monoculture farming (Higes et al., 2007; Lounsberry et al., 2010; Galluzzi, 2011). These factors negatively impact not only agricultural pollination but also pollinator diversity in natural ecosystems. Human-induced pressures—including intensive agriculture, habitat loss, pesticide use, genotype mixing, introduction of exotic species, and climate change—threaten both wild pollinators and managed colonies (Eardley et al., 2006). Figure 2. Conceptual illustration (AI-generated) depicting the decline in insects colliding with car windshields over time. AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE . . .   45 For instance, in Canada, fenitrothion application against spruce aphids reduced pest populations but significantly impaired natural pollination of commercial crops such as blueberries (Sihag, 1995). Similarly, monoculture farming reduces foraging and nesting sites, weakening colony health. In the USA alone, honeybee colonies have declined by over 40% since 1947, and in 2005, imported colonies were required to supplement pollination for almond production, increasing the risk of introducing new pests and pathogens (Biddinger et al., 2018). Collectively, these factors make pollination deficits both a biological and an economic risk (Garibaldi et al., 2018). Habitat fragmentation and degradation are major threats to pollinator populations. Although hedgerows, field margins, and other so-called “waste areas” offer essential nesting sites for certain native bees, their elimination has caused significant population declines. Fragmentation reduces gene flow between populations, increasing genetic erosion and extinction risk (Kluser & Peduzzi, 2007). Until a few decades ago, insects colliding with car windshields were so numerous that windows were often almost entirely covered. Today, this phenomenon has drastically decreased, serving as a visible indicator of insect population decline. We are now in the 63rd year since Rachel Carson’s Silent Spring highlighted the dangers of agricultural chemicals, coinciding with the continued rise in pesticide production and growing awareness of their ecological impacts. Another significant factor is agricultural practices. Improper use of pesticides, herbicides, and insecticides can disrupt pollinators’ orientation or cause mortality. In particular, systemic insecticides (e.g., imidacloprid) are transported into pollen and nectar, posing serious risks to honeybees and other insects (Kluser & Peduzzi, 2007). Monoculture farming does not provide the necessary food resources for pollinators and undermines the sustainability of pollinator populations. Other factors include diseases (e.g., Varroa mites, viruses), genetic issues, competition from invasive species, predators, climate change, and the reduction of larval host plants. The removal of subsidies provided to beekeepers also exacerbates these threats (Kluser & Peduzzi, 2007). Due to local and global environmental degradation, the decline of pollinators and the pressures of agricultural intensification directly threaten species survival and agricultural production (Aizen et al., 2008). The growth of 46   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . animal-pollinated plants can outpace the increase in honeybee colony numbers, potentially limiting pollination as a critical resource (Brittain et al., 2014). Agricultural intensification and habitat loss particularly negatively affect wild bees. Additionally, increasing human populations and climate change exert additional pressures on essential resources for food production, especially water (Brittain et al., 2014). Agricultural biodiversity—the variety of plants, animals, and microorganisms that directly or indirectly support food production—has been shaped by millennia of human–environment interactions and constitutes one of humanity’s most valuable natural resource bases (Hunter et al., 2017). However, the critical role of this biodiversity in ensuring the sustainability of agricultural and food systems is often insufficiently recognized. Current dominant agricultural systems provide high yields for certain crops globally while leaving significant portions of the population with insufficient or imbalanced nutrition (Godfray et al., 2010). Globally, roughly 795 million people suffer from undernourishment, about 2 billion are overweight or obese, and an additional 2 billion experience micronutrient deficiencies. This situation indicates that current food and agricultural systems are unsustainable not only in terms of production capacity but also regarding nutritional value, accessibility, and ecological impacts (Godfray et al., 2010; Foley et al., 2011; Ray et al., 2013; Hunter et al., 2017). Steep declines in both managed and wild honeybee populations across nearly all regions of the USA, Mexico, and Canada underscore the vulnerability of pollinator ecosystems in North America. Colony losses recorded over the past five years have reduced the number of managed pollinators to unprecedentedly low levels for the past 50 years, posing a serious threat to food security (AllenWardell et al., 1998). Approximately 1,200 wild vertebrate pollinator species in North America may be at risk. However, data gaps regarding the population dynamics of invertebrates, such as the insects responsible for most pollination, constitute a critical knowledge gap. The synergistic effects of habitat fragmentation, pesticide and herbicide use, and climate change generate both lethal and sub-lethal threats. In this context, pollination ecology experts have identified the following priority threats: the multi-year lethal effects of pesticides and herbicides on populations; habitat losses due to agricultural intensification; the inability of migratory pollinators to locate safe “nectar corridors”; and the exclusion of plant reproductive success (seed and fruit set, flower visitation rates) from ecosystem restoration plans (Allen-Wardell et al., 1998). Furthermore, viral pathogens and AGRICULTURAL SUSTAINABILITY AND BIODIVERSITY PERSPECTIVE . . .   47 parasites spread through the movement of migratory apiaries adversely affect both managed and wild bee populations. The combination of agricultural intensification, monoculture systems, and pesticide use, together with habitat loss and disease pressures, poses a serious threat to pollinator health (AllenWardell et al., 1998; Kluser & Peduzzi, 2007; van Strien et al., 2019). 6. Pollinator-Friendly Agricultural Practices Pollinator-friendly agricultural practices are critical for sustaining ecosystem services by meeting the feeding and nesting needs of pollinators within agroecosystems. Flower strips, field-edge habitats, riparian buffer zones, and small forest patches provide essential food and shelter, supporting healthy populations of honeybees, wild bees, butterflies, and flies. These habitats also play a key role in enhancing agricultural productivity and maintaining ecosystem services (Liliana, 2017; Sihag, 1995). The judicious application of pesticides, combined with Integrated Pest Management (IPM), constitutes a key strategy for pollinator conservation. Integrated Pest Management (IPM) combines biological, cultural, physical, and chemical strategies to control pests while minimizing negative impacts on pollinators and can be implemented in conventional, organic, or sustainable farming systems. Farmer training and the integration of local knowledge systems enhance the relevance and effectiveness of pollinator-friendly practices in local contexts (Sihag, 1995; Biddinger et al., 2018; Gurr et al., 2004; Singh et al., 2004). The conservation and management of semi-natural habitats is a key strategy for strengthening ecosystem services in agricultural landscapes. Hedges, meadows, and forested areas support pest control and contribute to pollination and soil protection services. The scale of these effects varies depending on location, crop type, and user practices. Only 24% of existing studies include control or intervention groups, and most are short-term observations, highlighting the need for long-term research investments (Holland et al., 2017; Gurr et al., 2017). The use of technology in agriculture is critical for enhancing the effectiveness of pollinator-friendly practices. Precision agriculture tools, drones, sensors, Internet of Things (IoT) devices, along with AI-driven analytics, enhance the efficiency of production processes. Sensors monitoring soil moisture, pH, and plant stress deliver real-time data for irrigation, fertilization, and pest management, allowing for precise pesticide application and effective monitoring of habitat conservation zones. Mechanized pollination and hive 48   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . monitoring contribute to maintaining pollination capacity and increasing agricultural productivity (Mansoor et al., 2025; Karunathilake et al., 2023; Wu et al., 2022). Various strategies are proposed to support pollinators’ natural habitats and food sources. Hedgerow plants act as windbreaks while providing food and nesting resources through nitrogen-fixing legumes. Field boundaries, flower strips, and natural vegetation create alternative food sources. Home gardens, flowering hedges, and fruit trees provide small-scale food sources and contribute to local pollinator diversity. Riparian forests and small woodland patches improve water quality while offering rich pollinator habitats. Cover crops support pollinator activity by providing flowers during fallow periods while enhancing soil health (Garibaldi et al., 2018; Dover & Sparks, 2000; MacLeod, 1999; Ollerton et al., 2022; Abrol, 2012; Thrupp, 2000). Agrobiodiversity and mixed cropping systems in sustainable agriculture support pollinator and natural enemy populations. Intercropping, crop rotation, biological control agents, agroforestry systems, and shaded plantations strengthen ecosystem services while enhancing productivity. Cultivating domesticated plants alongside their wild relatives provides continuous feeding and nesting resources, facilitating the transfer of genetic diversity to agricultural production (Thrupp, 1998; Thrupp, 2000; Heimpel & Jervis, 2005; Whitby et al., 2020; Singh, 2017; Abrol, 2012). Integrated management strategies form the foundation of pollinatorfriendly agriculture. Integrated Pest and Pollinator Management (IPPM) coordinates the management of pests, natural enemies, and pollinators to sustain agroecosystem functions. Pollination Information Management Systems (PIMS) offer farmers timely and accurate data to effectively manage pollination services in agricultural systems (Jarpla et al., 2024). Protecting larval stages, implementing polyculture practices, strategically placing honeybee colonies, restoring habitats, conserving local varieties, and using advanced monitoring technologies are essential for maintaining pollinator health and sustaining ecosystem services. 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Research progress in mechanized and intelligentized pollination technologies for fruit and vegetable crops. International Journal of Agricultural and Biological Engineering, 17(6), 11-21. Yang, X., Cox-Foster, D.L. (2005). Impact of an ectoparasite on the immunity and pathology of an invertebrate: Evidence for host immunosuppression and viral amplification. Proc. Nat. Acad. Sci., 102, 7470-7475. 63 CHAPTER IV WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION: APPROACHES, APPLICATIONS, AND FUTURE PERSPECTIVES Alper ALVER1 & Emine BAŞTÜRK2 1Department of Environmental Protection and Technologies, Technical Sciences Vocational School, Aksaray University, Aksaray, Türkiye. E-mail: [email protected] ORCID: 0000-0003-2734-8544 2Department of Environmental Protection and Technologies, Technical Sciences Vocational School, Aksaray University, Aksaray, Türkiye. E-mail: [email protected] ORCID: 0000-0002-1628-5026 1. Introduction Water quality is a cornerstone of sustainable agriculture. While global attention often gravitates toward water quantity, the chemical and physical integrity of irrigation water is equally decisive for crop productivity, soil health, and long-term ecosystem resilience (Bhatt et al., 2023; Uddin, 2023). In many regions, irrigation waters with ostensibly adequate flow yet suboptimal chemical composition undermine yields, induce salinization, or accelerate soil degradation. Therefore, systematically evaluating irrigation water quality is not a luxury, it is a necessity. In irrigated systems, water contributes more than moisture: it carries ions, dissolved salts, trace elements, and potential contaminants. Elevated salinity, high sodium content, alkalinity, boron toxicity, or heavy metal presence can impose osmotic stress, ion imbalances, or even direct phytotoxic effects (Grattan & Grieve, 1998; Qadir et al., 2007; Suarez, 2012). Over time, these 64   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . stresses may degrade soil structure, impede infiltration, and reduce water use efficiency (Munns & Tester, 2008; Shrivastava & Kumar, 2015). For example, sodicity induced by excessive Na⁺ relative to Ca2+ and Mg2+ can lead to clay dispersion, loss of porosity and permeability collapse (El Behairy et al., 2021; Richards, 1954). Moreover, certain crops exhibit narrow tolerance ranges: for instance, boron toxicity and chloride sensitivity impose tight constraints in fruit, vegetable, and cotton production (Kabata-Pendias, 2000). In practice, farmers must often allocate lower-quality water to more tolerant fields, adjust leaching practices, or blend resources, decisions that depend critically on robust water quality assessment frameworks. Traditionally, agricultural water assessments have relied on a few central parameters such as electrical conductivity (EC) and sodium adsorption ratio (SAR) to screen suitability (Ayers & Westcot, 1985). While these metrics are widely used and easy to compute, they oversimplify the complex interplay of multiple ions and compounds. A water sample may pass the EC threshold yet be compromised by excessive boron or residual carbonate, conditions that single-parameter rules cannot flag (El Behairy et al., 2021; Malakar et al., 2019). Furthermore, in cases where contaminants or trace metals are present, a univariate approach may fail altogether. Combined risks, such as moderate salinity plus trace arsenic, may present more harm than each parameter alone. Hence, modern practice favors multivariate indices that integrate diverse parameters into composite metrics to better reflect agronomic risk (Dash & Kalamdhad, 2021; Le et al., 2024). Composite water quality indices (WQIs) seek to condense a multidimensional water quality dataset into an interpretable scalar or categorical class such as “excellent,” “good,” or “poor” (Simian et al., 2025). Such indices typically involve four key steps: parameter selection, normalization or transformation to a common scale, weighting to assign relative importance, and aggregation and classification (Uddin, 2023). The literature over the past decade has witnessed both refinement of classic indices and invention of new hybrid and machine-learning, augmented methods. In literature, comparison of WQI models for surface waters and discussion of transferability to irrigation usage were made (Das, 2025; García-del-Toro et al., 2025). More recently, researchers used artificial intelligence to predict irrigation water quality indices from a limited set of chemical measurements, illustrating how data-driven methods can streamline assessment workflows (Biazar et al., 2025; Pan et al., 2025). Even so, transitioning from general-purpose WQIs, developed for drinking WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION . . .   71 3.2.3.TheUnitedStatesSalinityLaboratory(USSL)classification The United States Salinity Laboratory (USSL) classification, proposed by firstly Richards, represents one of the earliest systematic frameworks for irrigation water assessment (Richards, 1954; Shahid et al., 2013). It is based on salinity hazard and sodium hazard. Salinity hazard is determined from EC: C1 (EC < 0.25 dS/m, low salinity), C2 (0.25-0.75 dS/m, medium), C3 (0.75-2.25 dS/m, high), and C4 (>2.25 dS/m, very high). Sodium hazard is measured using the sodium adsorption ratio (SAR) as defined above, and classified as S1 (SAR < 10, low), S2 (10-18, medium), S3 (18-26, high), and S4 (>26, very high). The combined designations, such as C2-S1 or C3-S3, provide an intuitive assessment of irrigation water. The simplicity and agronomic relevance of this system explain its wide adoption, though it does not consider hazards like boron toxicity or heavy metals. 3.2.4.TheWorldHealthOrganizationguideline The World Health Organization provides guidelines that primarily emphasize human health protection, especially where treated or untreated wastewater is reused for irrigation (Shoushtarian & Negahban-Azar, 2020). These guidelines establish microbial and chemical thresholds rather than a composite formula. For microbial quality, ≤1000 fecal coliforms per 100 mL is recommended for restricted irrigation and ≤200 per 100 mL for unrestricted irrigation of crops consumed raw. For chemical hazards, maximum allowable concentrations are set for heavy metals such as cadmium (0.01 mg/L), lead (0.1 mg/L), and arsenic (0.1 mg/L), while nitrates are limited to 50 mg/L. Although WHO guidelines do not produce a single numerical index, their values are frequently incorporated into irrigation water quality indices as additional constraints or penalty sub-indices. 4. Water Quality Index Applications in Different Countries Applications of water quality indices (WQIs) vary considerably across countries, reflecting differences in climate, cropping systems, water resource characteristics, and regulatory frameworks. Although the conceptual principles are similar, the parameters emphasized and the threshold values adopted often diverge, making national and regional adaptations essential for irrigation water management (Bretcan et al., 2022). 4.1.Türkiye In Türkiye, irrigation water quality is primarily evaluated under the Water Pollution Control Regulation. This regulation defines surface water quality 72   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . classes that are also applied to irrigation suitability. Parameters such as pH, electrical conductivity (EC), sodium adsorption ratio (SAR), boron, chloride, and heavy metals are commonly assessed, and the classification determines whether a water body is suitable for agricultural use. For groundwater, the Regulation on Water for Human Consumption standard and the practices of the State Hydraulic Works of Türkiye are applied, integrating both human health and agronomic considerations. This dual approach ensures that irrigation water protects soil fertility while meeting minimum health standards (Alver & Baştürk, 2019; Baştürk & Alver, 2019). 4.2.EuropeanUnion Within the European Union, the Water Framework Directive (WFD) provides the overarching framework for water quality management. The WFD requires all member states to achieve “good status” for both surface and groundwater bodies, thereby influencing irrigation water assessments as well. In practice, irrigation water evaluations in the EU often focus on salinity, nitrate, and pesticide residues, reflecting both agronomic and ecological concerns (Zacharias et al., 2020). Unlike purely agronomic indices, EU applications often integrate ecological status and chemical standards, ensuring that irrigation water use does not compromise ecosystem integrity. 4.3.UnitedStatesofAmerica In the United States, irrigation water quality is evaluated through a combination of Environmental Protection Agency (EPA) guidelines and United States Department of Agriculture (USDA) standards. EPA primarily sets thresholds for heavy metals, nitrates, and toxic contaminants, while USDA focuses on salinity, sodicity, and boron, which directly affect soil structure and crop performance (Rashid et al., 2023). For example, USDA guidelines specify EC and SAR limits for different crop categories, and boron thresholds are strictly enforced in regions such as California’s Central Valley where boron toxicity is a recurrent constraint (Qadir et al., 2023). This dual framework ensures both environmental protection and agricultural productivity. 4.4.Othercountries Other countries demonstrate further regional adaptations. In India, WQIs are widely used to evaluate groundwater quality for irrigation, with EC, SAR, total dissolved solids (TDS), and fluoride being central parameters (Siddha & WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION . . .   73 Sahu, 2023). Studies across semi-arid regions emphasize the high variability of groundwater quality, necessitating region-specific indices. In China, rapid industrialization and intensive agriculture have prompted WQI applications that integrate both salinity and heavy metal contamination, especially in periurban irrigation districts (Ou et al., 2024). African countries, particularly in arid and semi-arid zones, often prioritize salinity and microbial indicators, as water scarcity drives the reuse of unconventional water sources including wastewater (Chaibi et al., 2024). In such contexts, irrigation water quality assessment directly links to food security and public health. These comparisons highlight that while the conceptual basis of WQIs is global, their application is inherently local. Thresholds and parameter choices must be tailored to ecological conditions, crop requirements, and water use practices. A standardized global index is therefore unlikely to be universally effective; instead, context-specific adaptations remain the most practical path toward sustainable irrigation management (Pahl-Wostl, 2015). 5. Plant and Product-Based Water Quality Requirements Crop-specific water quality requirements represent a crucial dimension of irrigation management, since plants vary widely in their tolerance to salinity, sodicity, and toxic elements. Water that is suitable for one crop may cause yield losses or physiological stress in another. Therefore, integrating crop tolerance thresholds into water quality indices (WQIs) is essential to ensure that assessments move beyond generic classifications and reflect practical agricultural outcomes (du Plessis et al., 2023; Johnston et al., 2024) Crop tolerance differences are most evident in relation to salinity, typically measured through electrical conductivity (EC) of irrigation water. Sensitive crops such as beans, carrots, and onions exhibit yield reductions at EC values as low as 1.0–1.5 dS/m, whereas moderately tolerant crops like maize, wheat, and rice can tolerate EC up to 3.0–3.5 dS/m without severe losses. Highly tolerant crops, including barley, cotton, and sugar beet, may sustain acceptable yields even at EC levels exceeding 7.0 dS/m (Aragüés et al., 2011). Such variation underscores the need to contextualize water quality assessments in terms of the intended cropping system. Sodium-related parameters also play a key role. The sodium adsorption ratio (SAR) reflects the risk of sodicity, which can deteriorate soil permeability and structure. Sensitive vegetables and fruits often require irrigation waters with SAR < 6 to maintain soil health, whereas more tolerant cereals can withstand 74   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . SAR values in the 10–15 range if managed with adequate leaching and calcium amendments (Minhas & Qadir, 2024a). When SAR is evaluated alongside EC, a more reliable picture of long-term soil and crop sustainability emerges. Boron is another parameter with strong crop-specific thresholds. Although it is an essential micronutrient, the window between deficiency and toxicity is narrow. Sensitive crops such as citrus, grapevine, and beans can show toxicity symptoms at boron concentrations as low as 0.5 mg/L. In contrast, cotton, sugar beet, and alfalfa may tolerate up to 2.0–4.0 mg/L before significant yield impacts occur (Niharika & Sheeba, 2022; Qadir et al., 2023). This variability requires that boron be explicitly included in irrigation WQIs, particularly in arid and semi-arid regions where natural boron enrichment of groundwater is common. An illustrative summary of crop-specific thresholds is presented in Table 2. Table 2. Critical thresholds of EC, SAR and B for representative crop groups. Crop type Critical EC (dS/m) Critical SAR Critical B (mg/L) Beans, carrots, onions (sensitive vegetables) 1.0-1.5 <6 0.5-0.75 Maize, wheat, rice (moderately tolerant cereals) 3.0-3.5 6-10 0.75-1.0 Cotton, barley, sugar beet (tolerant crops) 7.0-8.0 10-15 2.0-4.0 Citrus, grapevine (sensitive fruits) 1.5-2.0 <6 0.5-0.75 The role of WQIs in incorporating these crop-specific differences is significant. Conventional indices that classify water simply as “good” or “poor” may be misleading if they do not account for the intended crop. For example, water classified as marginal by FAO standards could still be acceptable for cotton but unsuitable for beans. Recent studies therefore recommend developing crop-adjusted WQIs, in which parameter weights and threshold values are modified according to crop-specific tolerances (Kachroud et al., 2019; Malakar et al., 2019) Such indices enable more precise decision-making, ensuring that irrigation water assessments are not only scientifically accurate but also agronomically meaningful. By integrating crop-specific tolerances into WQIs, irrigation managers can optimize water allocation, promote sustainable use of marginal-quality waters, and safeguard food security under conditions of increasing water scarcity and soil salinization. This approach also aligns with precision WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION . . .   75 agriculture, where water quality assessments are tailored to the spatial and temporal variability of crop needs. 6. Calculation and Application Examples of WQI 6.1.StepwiseCalculationofWQI The construction of a water quality index (WQI) for irrigation water follows a systematic sequence of steps that condenses raw monitoring data into a single decision-oriented metric (Cao et al., 2015). The first step is parameter selection. For the present demonstration, four widely used irrigation-relevant parameters were chosen: electrical conductivity (EC) to represent salinity hazard, sodium adsorption ratio (SAR) to reflect sodicity risk, boron (B) as an indicator of potential toxicity, and pH as a determinant of chemical balance and nutrient availability. The second step is normalization. Since the parameters are measured in different units and ranges, each value must be transformed into a dimensionless sub-index ranging from 0 to 100, where 100 indicates optimal quality. In this framework, EC ≤0.7 dS/m scores 100, while EC ≥3.0 dS/m scores 0, with linear scaling in between. SAR ≤6 scores 100, SAR ≥18 scores 0. Boron concentrations ≤0.5 mg/L are scored 100, while B ≥2.0 mg/L scores 0. For pH, the optimal range 6.5-8.5 is scored 100, decreasing linearly to 0 at 5.5 and 9.5. The third step is weight assignment. Different parameters do not affect crop growth equally. Here, weights were selected to reflect relative agronomic importance: EC (0.35), SAR (0.35), B (0.20), and pH (0.10). The fourth step is aggregation. The sub-indices are combined through a weighted arithmetic mean: ii i WQI w S=´ å Equation 9 where 𝑆𝑖 denotes the normalized sub-index and 𝑤𝑖 the assigned weight. The fifth step is classification. To facilitate decision-making, the final WQI is expressed in qualitative terms: values ≥80 are categorized as good, 60–79 as moderate, and <60 as poor. 6.2.ExampleDatasetandFAO/CCME/USSL/WHOComparison To illustrate the application of irrigation water indices, five hypothetical water samples (A-E) were evaluated. Measured parameters included EC, SAR, boron, and pH. Each sample was then assessed using four established frameworks: 76   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . (I) FAO-based irrigation indices, (ii) the Canadian Council of Ministers of the Environment Water Quality Index (CCME-WQI) adapted to FAO thresholds, (iii) the United States Salinity Laboratory (USSL) classification based on EC-SAR categories, and (iv) the World Health Organization (WHO) guidelines focusing on health-related limits for boron, nitrates, and microbiological indicators. The FAO-based evaluation classified water according to crop tolerance thresholds. The CCME-WQI provided a statistical score that accounted for scope, frequency, and magnitude of exceedances relative to FAO thresholds. The USSL approach categorized samples into salinity (C1-C4) and sodicity (S1-S4) hazard classes. The WHO guideline-based assessment was simplified here to boron and nitrate limits, with microbial quality assumed adequate for demonstration (Table 4). Table 4. Comparison of irrigation water quality classifications according to FAO, CCME, USSL and WHO frameworks (samples A-E). Sample FAO-based Indices CCMEWQI USSL Classification WHO Guidelines A (EC=0.50, SAR=3.0, B=0.30, pH=7.5) Suitable (Good) Excellent (100) C1-S1 (low salinity, low sodicity) Within limits (suitable) B (EC=1.20, SAR=8.0, B=0.80, pH=7.8) Suitable (Moderate tolerance crops) Good (83) C2-S2 (medium salinity, medium sodicity) Within limits (suitable) C (EC=2.80, SAR=16.0, B=1.50, pH=8.2) Marginal (sensitive crops affected) Poor (25) C3-S3 (high salinity, high sodicity) Borderline (B near limit) D (EC=0.90, SAR=5.0, B=2.30, pH=7.2) Unsuitable (excess B) Moderate (77) C2-S1 (medium salinity, low sodicity) Exceeds B guideline (unsuitable) E (EC=3.50, SAR=20.0, B=0.40, pH=6.0) Unsuitable (very high EC, SAR) Poor (25) C4-S4 (very high salinity, very high sodicity) Within limits (but agronomically unsuitable) The results emphasize how different frameworks highlight different risks. FAO and USSL classifications are primarily driven by salinity and sodicity and WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION . . .   77 thus identify Samples C and E as unsuitable. CCME-WQI, with its composite scoring system, yields poor classifications for C and E, moderate for D, and good to excellent for A and B, consistent with FAO interpretations. WHO guidelines, focused on food safety, identify D as unsuitable due to boron toxicity, while classifying the others as acceptable for human health. Figure 1. Distribution of irrigation water samples (A–E) across FAO, CCME, USSL and WHO classifications. Figure 1 illustrates the divergence and overlap of classification outcomes among the four frameworks. Samples A and B are consistently classified as good or suitable, whereas C and E are consistently rated poor or unsuitable. Sample D highlights the added value of including boron and health-related considerations: while agronomically acceptable in terms of EC and SAR, it fails WHO guidelines and is downgraded under FAO due to excessive boron. This comparison demonstrates the importance of multi-framework evaluation. No single index can fully capture the complexity of irrigation water risks; FAO and USSL approaches are agronomically pragmatic, CCME provides statistical robustness, and WHO ensures food safety. An integrated use of these methods yields the most reliable basis for sustainable irrigation water management. 7. Future Perspectives The future of irrigation water quality assessment is inseparable from the challenges posed by global environmental change (Assouline et al., 2015). Climate change and increasing water scarcity are expected to intensify pressures on both the quantity and quality of freshwater resources (Garrote, 2017). Rising 78   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . temperatures, altered precipitation patterns, and salinization of coastal aquifers will likely exacerbate salinity and sodicity hazards, while more frequent droughts may increase reliance on marginal water sources such as treated wastewater or brackish groundwater (Khondoker et al., 2023). These dynamics underscore the need to adapt existing WQI frameworks to account for greater variability, uncertainty, and emerging pollutants. Traditional threshold-based classifications may no longer suffice in contexts where baseline water quality is shifting, and thus more flexible, adaptive indices will be required to maintain agricultural productivity and food security. New-generation approaches are increasingly integrating machine learning, artificial intelligence, and decision support systems into WQI development. Machine learning algorithms such as random forests, artificial neural networks, and gradient boosting have shown promise in predicting irrigation water quality classes from a reduced set of parameters while accounting for nonlinear relationships among variables. Coupled with fuzzy logic and multi-criteria decision analysis, these models can dynamically adjust parameter weights, thereby overcoming the subjectivity inherent in conventional WQIs. Decision support platforms that embed such tools within geographic information systems further allow real-time mapping of irrigation water suitability, linking laboratory analyses with spatially explicit agricultural planning (Mathenge et al., 2022). A particularly promising direction involves the integration of WQIs with broader sustainability indicators, notably the Water Footprint (WF) framework. While WQIs capture the chemical and physical suitability of water, the WF quantifies the volume of water consumed in agricultural production, distinguishing between green water (soil moisture from rainfall), blue water (surface and groundwater withdrawals), and grey water (dilution requirements for pollutants). By merging WQI and WF approaches, future assessments could simultaneously evaluate water quality and quantity dimensions, offering a holistic perspective on irrigation sustainability. Such integrated metrics would enable not only resource optimization at the farm scale but also standardized reporting at regional and national levels. Importantly, they could also be aligned with the Sustainable Development Goals (SDGs), offering transparent indicators for policymaking, cross-country benchmarking, and long-term resilience planning. 8. Conclusion Water quality indices (WQIs) represent indispensable tools in irrigation water management, condensing complex hydro-chemical information into WATER QUALITY INDICES IN AGRICULTURAL IRRIGATION . . .   79 forms that are both scientifically robust and practically accessible. Their role in guiding agricultural decision-making is particularly critical in regions where water scarcity, soil degradation, and food security concerns interact. By enabling comparisons across time, space, and regulatory frameworks, WQIs provide a common language for evaluating irrigation water suitability and identifying risks that may otherwise remain obscured in raw datasets. The potential for national and international comparison further enhances the utility of WQIs. Harmonized yet adaptable frameworks allow water managers to benchmark local irrigation water quality against regional and global standards, facilitating cross-country learning, collaborative research, and policy alignment. At the same time, the flexibility to incorporate crop-specific tolerances, marginal water reuse, and emerging contaminants ensures that WQIs remain relevant to diverse agronomic and environmental contexts. Looking forward, WQIs will play an increasingly central role in promoting sustainable and safe agricultural production. By integrating with advanced computational tools and complementary sustainability indicators such as the Water Footprint, they can evolve from static classifications into adaptive systems capable of anticipating risks and optimizing resource allocation. In doing so, WQIs not only safeguard crop yields and soil health but also provide policyrelevant evidence to support the achievement of global sustainability agendas such as the SDGs. Ultimately, these indices contribute to the resilience of agroecosystems under accelerating global change, linking scientific assessment with governance frameworks and international benchmarking for sustainable agricultural futures. 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Reviews in Environmental Science and Bio/Technology, 22(2), 349-395. Damiba, W. A. F., Gathenya, J. M., Raude, J. M., & Home, P. G. (2025). An Optimized irrigation water quality index for evaluating surface water 87 CHAPTER V FEEDS IN SUSTAINABLE AGRICULTURE Selim SIRAKAYA (Asst. Prof. Dr.) Aksaray University, Technical Sciences Vocational School, Department of Food Processing, Aksaray, Türkiye. E-mail: [email protected] ORCID: 0000-0003-2733-1726 1. Introduction The increasing global population and finite resources indicate that future generations will encounter increasingly difficult living conditions. Consequently, the deliberate utilization of available resources is becoming progressively vital. In this framework, resource utilization and sustainability are becoming essential ideas. The World Commission on Environment and Development defines sustainability as “economic development that satisfies present needs without jeopardizing the capability of future generations to fulfill their needs”. (WCED, 1987). Population expansion and economic advancement result in enhanced resource use. The conscious and effective use of resources remains a primary objective. Sustainability requires the protection of global resources from overexploitation and damage. Sustainability and its management are dynamic, addressing inquiries on resource consumption and its impacts. Animal-derived foods are a primary source of nourishment for humans. Animal nutrition is essential for maintaining the sustainability of animal food supply and fulfilling demands. Consequently, guaranteeing the sustainability of raw resources utilized in animal nutrition is a critical concern. 2. Feed Sustainability In an article exploring the tragedy of the commons within the context of feed sustainability, the answers to our questions are presented with a clear example. The process begins with livestock owners bringing their animals to common 88   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . pastures. Later, farmers bring in more animals to make more money. However, as time goes by, the pasture’s capacity and ability to feed the animals diminish. Animal weight gain then decreases, resulting in a decline in productivity and performance. To compensate, more animals are brought to pastures. This procedure further diminishes the pasture’s capacity to feed the animals, resulting in no one benefiting and everyone losing (Garrett Hardin, 1968). Garrett Hardin clearly highlighted the significance of forage sustainability in his seminal article “The Tragedy of the Commons.” The emphasis of sustainability initiatives in the agricultural sector may differ. Achieving optimum crop productivity or utilizing a certain land area for extended durations may require a trade-off. These two options present a paradox: should we enhance our short-term productivity, or should we intermittently diminish our produce to preserve soil fertility in the long term? (Kent E. Portney, 2017). 2 compensate, more animals are brought to pastures. This procedure further diminishes the pasture's capacity to feed the animals, resulting in no one benefiting and everyone losing (Garrett Hardin, 1968). Garrett Hardin clearly highlighted the significance of forage sustainability in his seminal article "The Tragedy of the Commons." The emphasis of sustainability initiatives in the agricultural sector may differ. Achieving optimum crop productivity or utilizing a certain land area for extended durations may require a trade-off. These two options present a paradox: should we enhance our short-term productivity, or should we intermittently diminish our produce to preserve soil fertility in the long term? (Kent E. Portney, 2017). &ĞĞĚƐ/Ŷ^ƵƐƚĂŝŶĂďůĞŐƌŝĐƵůƚƵƌĞ &ĞĞĚ^ƵƐƚĂŝŶĂďŝůŝƚLJ ŽŶǀĞŶƚŝŽŶĂů&ĞĞĚ^ŽƵƌĐĞƐ    ůƚĞƌŶĂƚŝǀĞ^ŽůƵƚŝŽŶƐ WƌŽďůĞŵƐ   ĂůƚĞƌŶĂƚŝǀĞĨĞĞĚƐ  ĂůŐĂĞ  ŝŶƐĞĐƚŵĞĂů  ĨŽŽĚďLJͲƉƌŽĚƵĐƚ  ĂŐƌŝĐƵůƚƵƌĂůďLJͲƉƌŽĚƵĐƚƐ  ƉƌŽĚƵĐƚŝǀŝƚLJ  ĚŝŐŝƚĂůŝnjĂƚŝŽŶ  ƉƌĞǀĞŶƚŝŶŐĨŽŽĚΘĨĞĞĚǁĂƐƚĞ  ŝŵƉƌŽǀŝŶŐĨĞĞĚƋƵĂůŝƚLJ   ĐĂƌďŽŶĨŽŽƚƉƌŝŶƚ  ǁĂƚĞƌƐĐĂƌĐŝƚLJ  ŚŝŐŚĐŽƐƚƐ  ǁĂƐƚĞ  ĐŽŵƉĞƚŝƚŝŽŶĨŽƌĨŽŽĚĂŶĚĨĞĞĚ  ŝŶƐƵĨĨŝĐŝĞŶƚĂƌĂďůĞůĂŶĚ  /ŶĂĚĞƋƵĂĐLJŽĨĐŽŶǀĞŶƚŝŽŶĂůĨĞĞĚ  ƉŽƉƵůĂƚŝŽŶŐƌŽǁƚŚ  ŵĞƚŚĂŶĞĞŵŝƐƐŝŽŶƐ Figure 1. Graphic Abstract of Feeds In Sustainable Agriculture The carrying capacity is essential for sustainability. Collapse ensues when the escalating demand for resources surpasses carrying Figure 1. Graphic Abstract of Feeds In Sustainable Agriculture FEEDS IN SUSTAINABLE AGRICULTURE   89 The carrying capacity is essential for sustainability. Collapse ensues when the escalating demand for resources surpasses carrying capacity. This phenomenon is intimately correlated with population expansion. For instance, when the population of animals surpasses the available resources necessary for their sustenance, a reduction in species could take place. Consequently, it is imperative to examine both maximal and optimal carrying capacities. The quantity of resources we possess, the proportion of our requirements to resources, and our capacity to utilize resources are variables of a sustainable system. The resources we possess are essential factors for the system’s survival and sustainability (Ateş, 2020). The quantity of feed supplies and the population of animals are essential for sustainability in animal feeding systems. Humans require animal food resources (meat, milk, eggs, etc.) for sustenance. Consequently, animals are nourished in a cyclical manner, yielding animal-derived sustenance for humans. The worldwide population is projected to attain 9.8 billion by 2050.(Saxena, Mishra, & Archana Tiwari, 2021). By 2050, population growth and shifts in dietary habits are projected to elevate the demand for animal products by 70% (Food and Agriculture Organization, 2023; World Bank Group, 2021). Reports suggest that 30-50% additional agricultural area will be necessary to satisfy demand under existing animal farming practices, hence intensifying resource strain and necessitating consideration of potential environmental consequences (Chisoro, Mazizi, Jaja, Assan, & Nkukwana, 2025). Efforts in sustainable food and agriculture must take into account both consumption and production (Goodman & Goodman, 2001). Consumption issues are among the most crucial challenges to address in sustainability. Technological advancements only add time to resource utilization. For example, during droughts, it’s possible to drill deeper and extract more water, but these technological advances don’t address the fundamental problem of water scarcity (Kent E. Portney, 2017). Long-term solutions necessitate the formulation of strategies for mindful resource utilization. In the global ecosystem, the concept of sustainability encompasses many elements. These elements influence each other, either positively or negatively. Food and feed sustainability is an example of this. Water from natural sources is common to both humans and animals. Both consumer groups compete for this resource. When discussing the sustainability of water resources for humans, it can be argued that animals consume more water , and limiting this consumption can be recommended. Implementing this restriction could lead to a decrease in animal food production, thereby endangering the sustainability of animal food for human consumption. Increasing competition for natural resources, especially 90   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . land and water, and the necessity of operating in a carbon-constrained economy significantly impact agricultural activities and productivity (ILRI, 2012; Stødkilde et al., 2023; UN, 2014). The concept of sustainability spans a wide range of areas, with processes interacting in both positive and negative manners. Implementing sustainability initiatives for one group may jeopardize another. This section of the book examines the sustainability of feed supplies utilized in animal feeding. Consequently, alternative sustainability processes are rarely thoroughly examined. Feed sustainability is described as “satisfying the requirements of the current animal population without compromising the needs of future animal populations”. The production of a traditional forage crop primarily requires land and water resources. Unfortunately, competition for land and water is intense. Therefore, priorities can shift from time to time. The use of land and water resources is particularly crucial for human life and nutrition. Therefore, because plants grown for both feed and food use the same resources in the same ecosystem, developing different strategies for feed sustainability is crucial. Plants grown for both feed and food naturally prioritize food resources. The need for feed is vital for livestock farming, and feed shortages lead to economic losses for farmers. Meat, milk, and other animal products play a crucial role in global food security. Despite increasing demand for animal products, the livestock sector faces challenges such as environmental impact, supply shortages, and economic sustainability (Pezo et al., 2024). The following topics are anticipated to enhance feed sustainability. 3. Evaluation of Alternative Feeds Growing traditional feed crops, coupled with increasing animal populations and demand for animal feed, requires more land and water. However, competition for these resources is fierce. This situation necessitates the development of alternatives to traditional feeds. Insects and animal-based chitin sources have recently emerged as alternatives to meeting animals’ nutritional needs, especially protein. Raw materials such as chitosan, derived from crustaceans like crabs and shrimp, offer promise in reducing methane emissions and improving animal health (Piboonkunsamlit, Suntara, & Cherdthong, 2025). Ruminant husbandry is essential for the production of meat and dairy. Suboptimal feed efficiency and inferior feed quality in ruminants adversely impact climate change by increasing methane emissions (Supapong et al., 2017). Chitosan should be FEEDS IN SUSTAINABLE AGRICULTURE   91 considered a sustainable feed additive because it reduces methane emissions, is rich in chitosan in alternatives, such as black soldier fly larvae, and has the potential to reduce environmental impacts (Piboonkunsamlit et al., 2025). Chitin and its derivatives, including chitosan and chitosan oligosaccharide, can contribute to a sustainable system by improving feed conversion efficiency and quality, optimizing resource use, reducing methane emissions, and partially replacing traditional feeds. Insects present a significant alternative to conventional feeds regarding sustainability. Insects have developed as a high-protein alternative to conventional feeds, offering a reduced environmental impact. Insects provide advantages for reduced waste generation and optimal resource utilization. Insect farming’s diminished water and spatial demands, together with its lower greenhouse gas emissions, may present benefits compared to conventional feed sources (Fu, Cheema, Mobashar, Shah, & Alqahtani, 2025). The increasing global demand for animal-based foods has created the need to explore sustainable alternatives to traditional feeds. Insects are considered one of the most important alternative sources (A. A. Shah et al., 2022). The advantages of utilizing insects over conventional feeds include the following: 1) a reduction in greenhouse gas emissions, 2) a reduction in the amount of land and water required for cultivation, 3) the utilization of organic by-products, and 4) an improvement in feed conversion efficiency. The following are disadvantages: 1) issues with standardization, 2) production scales, 3) deficiencies in legal regulations, 4) biosecurity, and 5) deficiencies in research and development (Cadinu, Barra, Torre, Delogu, & Madau, 2020). Additionally, the psychological resistance that people will show in case of use may also be a disadvantage. Insects possess considerable potential as a sustainable alternative feed source, with high protein content that helps mitigate ecological consequences in cattle production (Fu et al., 2025). Insects, as an organic resource, are anticipated to contribute to the sustainability of animal feed production. However, once we address the aforementioned disadvantages, we can potentially use insects as a substitute for conventional feeds in animal nutrition. Further research is also needed to ensure their safe use. Within the scope of feed sustainability, the use of microalgae as feed appears to be an extremely important field of activity (Ma & Hu, 2023). In addition, macroalgae rank among the top alternative sources for animal nutrition (Sırakaya, 2023). Given that nearly 70% of the Earth’s surface is aquatic and flourishing with biodiversity, utilizing algae farmed in this environment as 92   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . feed will substantially enhance sustainability. Conventional feeds necessitate substantial land and water resources, compete with plant-based meals, and may lead to a reduction in the cultivation of forage crops. Conversely, algae possess an advantage owing to their limited competition for available soil and their inherent occurrence in aquatic environments. Safeguarding our land and water resources is crucial for sustainable food and feed production. Consequently, the cultivation and harvesting of suitable flora in aquatic habitats, encompassing oceans, seas, freshwater bodies, lakes, and ponds, have to be incorporated into sustainable procedures. Consumers emphasize both nutritional quality and taste in their food selections. Microalgae can enhance the palatability and nutritional quality of feed when utilized as dietary components. Their fast expansion, less land needs, and superior nutritional value establish these crops as a feasible substitute for certain cereals in the feed industry (Haoujar, Haoujar, Altemimi, Essafi, & Cacciola, 2022). Cultivating microalgae in culture is important for achieving a standardized nutrient composition. Numerous studies have demonstrated the safe consumption of algae. However, the variability in the nutrient composition of macroalgae is an important factor to consider. Macroalgae found in different aquatic ecosystems may pose certain risks due to water pollution. The most significant of these risks is the absorption of potential heavy metals in the water by the algae, which is an enormous challenge (Sırakaya, 2023). Consequently, algae should be utilized solely if their nutritional composition and biosecurity dangers are assured. The extensive coverage of the Earth by water underscores the necessity for sustainable utilization of algae in animal feed and as an alternative to conventional feeds. To achieve sustainable production, byproducts that have been derived from agricultural plants (such as stalks, straws, and husks) and from the industrial processing of plants (such as pulps) are of the utmost importance. Agricultural byproducts are generated in significant quantities all around the world. To bring down the cost of feed and lessen the impact on the environment, these wastes are utilized as feed. Furthermore, a large number of processed agricultural byproducts are also classified as feed. Several studies have shown that these byproducts boost production performance, decrease methane emissions, and lower expenses without causing any adverse consequences. There are reports that vital nutrients are squandered whenever these leftovers are not used effectively. When these byproducts are utilized as feed, their added value improves (A. M. Shah et al., 2025), which contributes to the cost reductions associated with using conventional feeds. FEEDS IN SUSTAINABLE AGRICULTURE   93 The utilization of conventional feeds such as soy and corn for human consumption results in supply-demand imbalances and escalating prices. Consequently, byproducts and other related products derived from the processing of these main products are gaining significance in the livestock sector. Byproducts such as straw, stem, and bark remaining after the production of agricultural crops are not adequately utilized, and their burning sometimes causes environmental pollution. Responsible use of these resources can reduce livestock costs, increase productivity, and serve as a partial substitute for costly traditional feeds. Investigation of methods to more effectively utilize crop byproducts, including wheat, barley, rice, and corn, in animal feeding is required. Ruminants possess the extraordinary capability to transform these raw resources into products such as meat and milk. These byproducts are often low in protein and rich in fiber content. The ability of ruminants to digest fibrous vegetation enhances the usage of these primary materials. Following the cultivation of crops, including wheat, barley, oats, triticale, rice, sorghum, lentils, and soy, the residual byproducts, referred to as straw, remain. Straw is the crop residue consisting of the dry stems and leaves remaining after the harvest of grains, legumes, and other crops. Straw is readily available in large quantities, typically comprising more than half of the harvestable portion of the crop. Straw is a fibrous, coarse plant byproduct that is inedible to humans, but it has always played an important role in agriculture and rural societies and has been used for various purposes (Feedipedia Animal feed resources information system, 2025). Straw is available wherever grain or legume production is undertaken. Assuming that cereal straw production is slightly higher than that of the corresponding grains, it can be estimated that 2 to 3 billion tons of straw were produced globally in 2007 (Food and Agriculture Organization of the United Nations, 2011). According to this information, we can clearly state that the amount of straw produced each year is equal to the amount of grain and legume produced. Wild fruits and their by-products obtained from multipurpose trees can be a promising, low-cost alternative to conventional feeds for sustainable feeding activities as a source of energy, protein, vitamins, minerals, oligosaccharides, and bioactive compounds (Chisoro et al., 2025). The use of wild fruits and their by-products as sustainable resources can reduce eutrophication, greenhouse gas emissions, and other pollution indicators (Chisoro et al., 2025). Local sources must always be considered when investigating alternative sources. These local resources may be utilized to diminish dependence on 94   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . imported feed. Utilizing locally procured feed is crucial, as it mitigates storage, transportation, and supply chain issues (Pexas, Doherty, & Kyriazakis, 2023). The utilization of locally generated by-products mitigates the environmental impact of livestock production and encourages the circular economy by recycling nutrients within the food system (Kazemi, 2025). The main challenges encountered in the use of by-products can be summarized under several headings. First, there are difficulties in precisely determining the inclusion rates and usage quantities of alternative raw materials in diets. Second, the negative effects of anti-nutritional factors contained in these alternative raw materials constitute a significant problem. Third, the inadequacy of ensuring the consistent availability of the required amounts of these raw materials is another significant issue. The potential problems encountered in the safe storage of alternative feeds, especially those with high moisture content, should not be overlooked. To address these negative conditions, policymakers should implement legal regulations to facilitate the use of these products. A knowledge base for these products should be established, their effects on livestock should be documented, and support such as subsidies and grants should be provided. Scientists and researchers should develop guidelines for the safe use of these products to guide farmers (Kazemi, 2025). 4. Practices for the Effective Use of Alternative Feeds To optimize feed utilization by animals and enhance feed conversion rates, feeds may undergo mechanical, chemical, and biological treatments. Physical and chemical treatments are crucial for more efficient use of straw within sustainable feeding processes. Straw can be subjected to grinding, soaking, boiling, and fermentation. Grinding is generally the preferred method. It has been determined that feed waste is reduced by 30% when consuming chopped straw and stems because animals cannot choose their feed (Mahesh Chander, 2010). Rejected feeds by the animals should be ground or chopped and uniformly mixed with other flavorful feeds using suitable equipment or feed wagons, thereby enhancing the intake of undesirable feeds and promoting animal production. Chemical treatments may be utilized to enhance the nutritional value of the straw. The goal of these chemical treatments is to enhance the capacity of rumen microbes to utilize feed more efficiently. Alkali treatment can be utilized on straw to enhance the digestion of plant cell walls that have seen FEEDS IN SUSTAINABLE AGRICULTURE   95 significant lignification. This mechanism deconstructs lignin-carbohydrate connections, releasing lignin and fragmenting cellulose molecules into smaller components. These procedures enhance the digestion of straw (RamalhoRibeiro, 1994). Chemical treatments can be carried out using alkaline treatments such as NaOH and NH₃ and oxidative treatments such as H₂O₂ and O₃. The aim is to increase the digestibility of low-quality straw, allowing animals to benefit more from these raw materials. This method allows these byproducts to be used as a substitute for higher-quality feed. Such an approach can be beneficial for sustainability. However, such chemical treatments require water, which will also increase water consumption. This can be a disadvantage in terms of feed sustainability. Therefore, we should consider the cost-benefit ratio and environmental impacts in such applications. Biological treatments can also be used to increase the digestibility of such feeds. Biological treatments utilize microorganisms such as bacteria, fungi, or enzymes to break down the complex lignin structure in plant residues. This process, known as biodegradation, increases the digestibility of the waste, making it suitable for feed. Biological treatments are more environmentally friendly than chemical treatments (A. M. Shah et al., 2025). Corn stover is one of the byproducts resulting from the grain corn harvest. This product includes parts such as stalks, leaves, and cobs. The inner parts of byproducts such as stalks and cobs contain partially spongy structures. Even if the stalks and cobs are broken down, they are selectively eaten by animals. These products are often used as animal bedding. However, if corn stover is mixed with moist, nutrient-dense byproducts like potatoes (chopped and cleaned, not intended for human consumption) and fermented into silage, its feed value will increase. In this case, the moist potatoes will be stored more safely as silage, preventing spoilage. The rigid parts of the corn plant, such as the stalk and cob, will absorb the water within the potato, making it soft and palatableResearch shows that processes such as fermentation and ensiling increase digestion and nutrient utilization (Kazemi, 2025). Similarly, fruit pulps (mandarin, orange, pomegranate, etc.) contribute to sustainable animal nutrition. Products like fruit pulps have a very high moisture content. Given the prevailing climatic conditions, it is advisable to consume these products within a brief period of arrival at the farm. This moist fruit pulp releases its water content in storage, causing environmental pollution and losing water-soluble nutrients. Therefore, when such high-moisture products are mixed with plants such as straw, hay, and corn stalks to form silage, they preserve their nutritional value and transfer 96   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . their fruity flavor to other crops. This process can help prevent animals from choosing feed. If moist fruit pulps are not consumed quickly, spoilage that might otherwise occur will be prevented, and the product’s shelf life will be extended throughout the year through longer and safer storage. Hull-like products can also be used safely in animal nutrition. However, their anti-nutritional factors and high fiber content can compromise digestibility. For example, the outer hull of almonds is used in animal nutrition. However, the tannin content, acting as an anti-nutritional factor, negatively impacts the palatability and digestibility of the feed (Meadows, 2023). To make this situation more efficient for the animals, the amount of tannin in the silage made from the mixture of almond hull and alfalfa has been reduced, and the digestibility of the alfalfa protein has been increased (Sırakaya & Beyzi, 2025). This type of practice increases the utilization efficiency of both crop residue and conventional feed. Therefore, such strategic and planned practices contribute significantly to sustainability. After all, byproducts from many agricultural crops are widely used as feed. However, conscious and effective use of such products is crucial for contributing to sustainability. 5. Waste Prevention and Feed Management The most important issue for running sustainable systems is reducing waste. The United Nations reported that 931 million tons of food waste were generated worldwide in 2021, corresponding to 17% of total food production (Thaore, Bahramian, Boudou, Hynds, & Priyadarshini, 2024). These wastes can contribute significantly to sustainability as easily digestible and safe feed ingredients (Pinotti et al., 2021). This food waste also results in environmental consequences. Consequently, if food waste is mitigated, conventional forage crops may be cultivated instead of human food production, or this waste can enhance sustainability by serving as animal feed. Preventing feed waste, in addition to food waste, will significantly contribute to sustainability. Therefore, ensuring that animals consume the exact amount of feed they need is critical. Overfeeding, just like underfeeding, negatively impacts animal performance and profitability. Overfeeding causes animals to emit indigestible nutrients as manure, causing environmental degradation. Excessive protein consumption, in particular, releases undigested nitrogen into the environment, resulting in nitrogen pollution. Overfeeding raises the nutrient content of manure, which increases the possibility of methane production via 103 CHAPTER VI REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING ROOT VEGETABLE PEELS IN FOOD APPLICATIONS Ayca GÜLHAN (Associate Professor) Department of Food Technology, Vocational School of Technical Sciences, Aksaray University, 68100, Aksaray, Türkiye. E-mail: [email protected] ORCID: 0000-0002-3435-7767 1. Introduction Due to the increasing world population and the growing awareness of the health benefits of fruit and vegetable consumption, the demand for fruits and vegetables is rising day by day. The consumption of fruits and vegetables is considered an important part of a balanced diet and also reduces the risk of many chronic diseases (Gowe, 2015; Sarwari et al., 2019). However, the increase in fruit and vegetable consumption leads to a rise in agricultural waste such as peels and seeds (Gowe, 2015). Agricultural by-products are generated in large quantities during post-harvest handling, processing, distribution, consumption, household use, and industrial food processing, leading to food waste (Lau et al., 2021). Approximately 25–30% of the waste generated in the fruit and vegetable industry consists of peels (Khan et al., 2024). Preparation may cause almost a third of veggies to go to waste. Bad tastes or textures are the primary reasons for discarding certain vegetable pieces (Lau et al., 2021). Pollution of the environment and potential dangers to human and animal health may result from the improper disposal of agricultural wastes. Agricultural wastes are among the sources of organic and microbial contamination in the ecosystem. Thermal waste disposal releases significant pollutant emissions into the atmosphere and sewage systems. The accumulation and decomposition of 104   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . these wastes lead to the active proliferation of microorganisms, disrupting the ecological balance. Most agricultural-industrial wastes are neither treated nor adequately utilized; therefore, many reports indicate that they are disposed of through burning, dumping, or unplanned storage. These wastes also contribute to various climate change–related problems by increasing greenhouse gas emissions (Sadh et al., 2018; Sarwari et al., 2019; Samilyk et al., 2021). The waste of agricultural by-products, classified as agriculture-based wastes, has become a major concern because it causes environmental and economic problems. Landfill emissions from decaying food, on-farm agricultural emissions, electricity and heat used during the production process, and the energy consumed for lost or wasted agricultural by-products are all sources of greenhouse gases. The greenhouse effect caused by these factors can lead to global warming and climate change, which may in turn contribute to the extinction of certain animal species (Lau et al., 2021). Since agro-industrial wastes are rich in nutrients and bioactive compounds, they should be considered as “raw materials” rather than “wastes” for other industrial processes. Utilizing agricultural and agro-industrial wastes as raw materials in the food industry can help reduce production costs, promote waste recycling, and contribute to environmental protection (Blakeney, 2011; Sadh et al., 2018). Agro-industrial sectors are exploring methods to promote eco-friendly and sustainable food production while ensuring that agricultural industrial by-products are utilized and made available for consumption. In particular, converting by-products generated during the processing of agricultural foods into innovative value-added products is an important step toward reducing environmental pollution (John et al., 2017; Lazăr et al., 2022; Khan et al., 2024). Vegetable peels, which are among food processing wastes, can be utilized in various industries such as food, textiles, and pharmaceuticals because they contain oils, enzymes, vitamins, polyphenols, dietary fibers, and carotenoids. Therefore, managing food waste and using it for the production of bioactive compounds is economically advantageous for sustainable development (Sarwari et al., 2019). Studies and academic research have also been conducted on the utilization of root vegetable peels with the aim of protecting the environment, contributing to the national economy, and ensuring the efficient use of food resources. Recent research highlights that root vegetable peels are rich sources of nutrients and emphasizes the need to apply modern methods and technologies to enable their efficient conversion into value-added products. This review discusses the importance and nutritional value of underutilized root vegetable peels, as well as REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING . . .   105 research on their potential use in various food formulations. The transformation of root vegetable peels into high value-added products within the food industry is examined in the context of reducing environmental pollution, promoting economic sustainability, and supporting future research. 2. Root Vegetable Peels Potatoes, carrots, sugar beets, and beets are examples of root vegetables that are commonly consumed in daily human diets. Nearly 50% of the root vegetables produced worldwide each year end up as by-products. These by-products originate from both primary production (such as leaves and roots) and food industrial processing (such as peels and pulps) (Zhou et al., 2023). Root vegetable peels are generally used as animal feed or discarded as waste without being utilized. Like other agricultural by-products, decomposing root vegetable peels release methane gas, one of the greenhouse gases that damages the ecosystem (Zhou et al., 2023; Kaale and Eduardo, 2025). Underutilized root vegetable peels can enhance the nutritional profile of various food products and enable the production of sustainable and affordable alternative foods (Kaale and Eduardo, 2025). However, root vegetable peels may contain various contaminants due to factors such as the vegetable’s capacity to absorb pollutants, high concentrations of substances in the soil, and soil pH levels. Proper screening and safe disposal of these contaminants are necessary to ensure that the peels can be safely used as food. In addition, processes such as drying should be carefully controlled before incorporating root vegetable peels into different food formulations (Coimbra et al., 2025). Root vegetables, which are an important part of the human diet, provide numerous health benefits, including hypoglycemic, antioxidant, antimutagenic, antimicrobial, immunomodulatory, and hypocholesterolemic activities. Roots and tubers generally contain bioactive compounds such as saponins, phenolics, glycoalkaloids, phytic acids, and bioactive proteins, which are responsible for these potential activities (Sarwari et al., 2019). Studies have reported that root vegetable peels are rich in nutritional and bioactive components such as polyphenols, antioxidant compounds, vitamins, and dietary fibers (Samilyk et al., 2021; Zhou et al., 2023). Research also indicates that root vegetable peels are a rich source of bioactive compounds that can be used as natural antioxidant agents and nutraceuticals and can serve as functional food additives in various sectors of the food industry (Ajila et al., 2010; Samilyk et al., 2021; Zhou et al., 2023). Moreover, the conversion of root vegetable peels into high-value products will also support the sustainability of the global food system (Zhou et al., 2023). 106   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . 3. High-Value-Added Compounds Found in Root Vegetable Peels and Their BiologicalActivities Although root vegetable peels are rich in nutrients and bioactive compounds, they are still mostly used as animal feed today (Albishi et al., 2013a). Peels are often indigestible due to their high fiber content, which prevents them from being used effectively. It is essential to use appropriate organic solvents, such as hexane, acetone, methanol, and ethanol, to extract the bioactive chemicals found in root vegetable peels before utilizing them as human food. Moreover, recent studies emphasize that green extraction methods are more advantageous than chemical solvents (Zhou et al., 2023). According to Eremet et al. (2020), applying various pretreatments and extraction methods to root vegetable peels can achieve higher compound content and yield. Root vegetable peels contain starch (25%, dry weight), non-starch polysaccharides (30%, dry weight), proteins (10–18%, dry weight), dietary fibers (15–45%, dry weight), lignin (20%, dry weight), and lipids (1–2%, dry weight), and they are rich in carotenoids and polyphenols (Javed et al., 2019; PérezChabela et al., 2021). In addition, some root vegetables exhibit various attractive colors due to their content of flavonoids, betalains, and carotenoids, which can influence consumer preferences (Petropoulos et al., 2019). The betalains found in red beet peels are pigments that give the beet its red-purple color (Zin et al., 2020). Studies have shown that root vegetable peels contain higher amounts of bioactive substances—including phytochemicals, phenolics, and tannins—than the edible parts of vegetables. Therefore, it is emphasized that root vegetable peels should be evaluated as separate valuable residues (Khan et al., 2024). Various studies have investigated the health-promoting chemicals found in root vegetable peels. Research suggests that root vegetable peels contain bioactive compounds that can reduce the risk of cardiovascular disease, cancer, and diabetes (Sampaio et al., 2020; Šeremet et al., 2020; El-Beltagi et al., 2022; Tiwari et al., 2022). Furthermore, these bioactive chemicals should be used in foods as natural antioxidants, food additives, anti-inflammatory agents, and anticancer agents (Kalpna et al., 2011; Zhou et al., 2023). Root vegetable peels, which are strong in phenolic compounds, have been proven in studies to have substantial antioxidant activity (Ziobro et al., 2022). Artificial food additives are now often employed as antioxidants and antibacterial agents in food items. Processed foods often include synthetic antioxidants such as butylated hydroxytoluene and butylated hydroxyanisole. However, the use of these REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING . . .   107 synthetic antioxidants has been limited owing to their possible carcinogenicity and other harmful qualities, creating a greater need for natural substances as replacements. The food industry is increasingly favoring the development and use of naturally derived antioxidants. Recently, the growing interest in replacing synthetic antioxidants with natural ones has led to significant advances in researching natural antioxidants obtainable from agricultural industries (Ajila et al., 2010; Khan et al., 2024). El-Beltagi et al. (2022) found that beet peels have potent antioxidant activity due to their high total phenolic content (832 mg/100 g dry weight). The major phenolic chemicals discovered were epicatechin, gallic acid, quercetin-3-O-rutinoside, and kaempferol. Furthermore, betalains (535 mg/100 g dry weight) and flavonoids (234 mg/100 g dry weight) were isolated from beet peels. Beet peel extract, at a dosage of 100 mg/100 mL, prevented the production of thiobarbituric acid in fish fillets even after 10 days of cold storage, demonstrating outstanding protective properties. Similarly, Albishi et al. (2013a) reported that potato peel extracts, containing chlorogenic, caffeic, p-coumaric, and ferulic acids, have a strong capacity to limit lipid peroxidation and can be used as antioxidants to preserve foods. Sarwari et al. (2019) investigated the antioxidant and antimutagenic potential of peels from radish (Raphanus sativus), turnip (Brassica rapa), beet (Beta vulgaris), sweet potato (Ipomoea batatas), and potato (Solanum tuberosum). The total phenolic content (TPC) of the peel samples ranged from 43.82 to 67.23 mg GAE/g DW. The samples’ TPC trended descendingly: beet > turnip > potato > radish > sweet potato peels. The greater TPC of beet peels has been linked to the presence of betalains, such as betacyanins and betaxanthins. The peels’ % DPPH radical scavenging capability varied from 49.96% to 80.98%, indicating a substantial association with their TPC. It was determined that all samples are excellent sources of phenolic antioxidants and should be valorized rather than disposed of as agricultural waste if adequate processing procedures are used. Root vegetable peels are similarly high in nutritional fiber. Dietary fibers fermented in the colon may modulate gut microbiota by suppressing harmful bacterial development and promoting intestinal health. In addition to their health benefits, dietary fibers exhibit functional features such as water retention, increased viscosity, and gel formation (Ajila et al., 2010; Zhou et al., 2023). Pérez-Chabela et al. (2021) employed 2% potato peel flour as a prebiotic to alter a yogurt recipe. The increase in dietary fiber and polyphenol content in the yogurt samples suggested that potato peel flour may have prebiotic properties that help gastrointestinal health without adversely impacting customer acceptability. Root vegetable 108   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . peel extracts or powders may be added to various food items to enhance their nutritional, sensory, and technical aspects. Samilyk et al. (2021) discovered that the peels of root vegetables (Beta vulgaris, Daucus corata, Apium graveolens, and Pastinaca sativa) contain necessary macroelements (K, Na, Ca, P, Cl, S, and N) as well as microelements (Fe and Mg). All samples included high levels of dietary fiber. The vegetable powders had high hydrophilic qualities, indicating that they might be used as structural stabilizers, emulsifiers, humectants, and thickeners in various food applications. 4. Potential Food Applications of Root Vegetable Peels Due to their nutrient composition and the bioactive compounds they contain, it is of great importance that the abundantly generated root vegetable peels worldwide are utilized in the production of various food products under hygienic conditions and using appropriate techniques. 4.1.PotatoPeels Yellowand white-fleshed tubers are the most famous around the world, but potatoes have the most genetic diversity of all the grown tuber species. Solanum tuberosum L. grows about 5,000 different kinds of potatoes. Red and blue-fleshed potatoes have many phenolic chemicals. They have almost three times as many overall polyphenols and are better at fighting free radicals than yellow-fleshed potatoes. The rich purple hue of potato flesh and peel has been linked to the presence of petunidin derivatives, a kind of anthocyanin (Burlingame et al., 2009; Petropoulos et al., 2019). The basic composition of potatoes has been reported as approximately 78% water, 19% carbohydrates, and 2% protein, along with vitamin C and vitamin B1 (Septiani & Ratnayani, 2025). The high amount of fermentable carbohydrates in potatoes is accompanied by significant amounts of dietary fiber (up to 3.3%), potassium (up to 693.8 mg/100 g), ascorbic acid (up to 42 mg/100 g), total carotenoids (up to 2,700 µg/100 g), chlorogenic acid and its polymers (up to 1,570 µg/100 g) as antioxidant phenols, and anti-nutritional compounds like α-solanine (0.001–47.2 mg/100 g). They also contain smaller amounts of protein (0.85–4.2%), amino acids, other minerals and vitamins, and bioactive compounds (Burlingame et al., 2009; Petropoulos et al., 2019). The composition of potato peel (g/100 g dry matter) has been reported as 83.30–85.10% water, 1.20–2.30% protein, 0.10–0.40% total lipids, 8.70–12.40% total carbohydrates, 7.80% starch, 2.50% total dietary fiber, 0.90–1.60% ash, 1.02–2.92% total phenolic content, and 0.51–0.96% total flavonoids (Javed et al., 2019; Kaale & Eduardo, 2025). REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING . . .   109 Studies have indicated that potato peel extracts are a natural source of antioxidants (Koduvayur Habeebullah et al., 2010; Mohdaly et al., 2010; Habeebullah et al., 2012; Amado et al., 2014; Khan et al., 2024). In a study by Mohdaly et al. (2010), potato peels were used to enrich sunflower and soybean oils as an antioxidant source. The observed antioxidant activity was attributed to the phenolic chemicals found in potato peel extracts. Peels from potatoes decreased thermal deterioration and improved the hydrolytic stability of vegetable oils. At 100 and 200 ppm, the addition of potato peel extract showed stabilizing effectiveness on par with synthetic antioxidants. Additionally, the composition and antioxidant properties of the flesh and peels of ten Chineseproduced colorful potato types were examined. According to the research, the anthocyanin content of potato peels was, on average, 15.34 times higher than that of the flesh. Furthermore, peel extracts had an average of 5.75 times the antioxidant activity of meat extracts. Purple Cloud No. 1’s meat extract showed the highest antioxidant activity among the evaluated types (Yin et al., 2016). Potato peels are an important source of phenolic compounds, with approximately 50% of the total phenolics present in the peel (Albishi et al., 2013a; Ezekiel et al., 2013). Incorporating the bioactive chemicals found in potato peels into functional meals may have positive effects on the nation’s economy and health. When processed potato goods like French fries, chips, mashed potatoes, and potato starch are made, a significant quantity of potato peel waste is produced. Waste from the potato processing industry might range from 20% to 50% of the raw material. Usually thrown away, these wastes cause microbial spoiling that harms the ecosystem (Habeebullah et al., 2012; Chohan et al., 2020). As a by-product of the food processing industry, potato peels are a useful and affordable raw material for the synthesis of chemicals with significant economic value. Given the large quantities of potato peels generated and their potential to cause environmental issues, their valorization to create added value is essential. Potato peel flour is prepared by boiling the peels (2–3 minutes at 90–95℃), drying (65℃ in a cabinet dryer or 30℃ via sun drying), and grinding the peels into a fine powder. The ratios of 100:0, 96:4, 94:6, and 92:8 were evaluated for potato peel flour (PPF) and wheat flour in various cake compositions. Cabinet-dried PPF performed better than sun-dried PPF in terms of antioxidant activity, mineral content, and protein (11.39 ± 0.07%), fat (7.23 ± 0.12%), fiber (12.92 ± 0.09%), and carbohydrate content (55.42 ± 1.07%). The addition of potato peel flour increased the cakes’ weight, height, and volume in comparison to control cakes made with just wheat flour. Researchers suggested enhancing the physical and organoleptic qualities of cakes by adding 4% cabinet-dried 110   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . potato peel flour (Akter et al., 2023). Significant changes were seen in the organoleptic properties, nutritional values, and physical attributes of the cookies as the amount of potato peel flour used increased. Studies were conducted to find the best recipe for cookies made using potato peel flour instead of wheat flour. Cookies with 25% potato peel flour earned the top marks in all sensory aspects and had superior nutritional values owing to increased protein, fiber, and mineral content (Septiani & Ratnayani, 2025). 4.2.SweetPotatoPeels Sweet potato (Ipomoea batatas (L.) Lam., Convolvulaceae) is a perennial species originating from Latin America, renowned for its starchy, fleshy tuberous roots. Various sectors, both culinary and industrial, extensively utilize these roots due to their starch content and functional attributes. The roots generally exhibit flesh that is white, yellow, or orange, with some varieties displaying purple flesh and elevated anthocyanin levels (Petropoulos et al., 2019). Sweet potato provides a range of macronutrients, including starch, dietary fiber, and protein, as well as essential micronutrients such as manganese, copper, potassium, iron, the B-vitamin complex, vitamin C, vitamin E, and provitamin A. Both the flesh and peel of the tubers contain significant amounts of bioactive compounds, including various polyphenols, peptides, and carotenoids, which confer physiological benefits, making sweet potato a functional food (Petropoulos et al., 2019; Amagloh et al., 2022). Findings from Amagloh et al. (2022) indicate that all bioactive compounds are present at higher levels in unpeeled sweet potatoes compared to peeled ones, highlighting the importance of utilizing the peel. Additionally, certain sweet potato varieties have peels rich in anthocyanins, making them a potential natural pigment source. Using sweet potato peel as a colorant represents an example of value-added applications (Petropoulos et al., 2019). 4.3.OnionPeels Onion (Allium cepa L., Alliaceae) is a plant species with several variations and substantial color variability. This variability is linked to the hues of the outer onion skins (Petropoulos et al., 2019). The onion bulb is high in nutrients, making it one of the most popular root vegetables among consumers (Gonzálezde-Peredo et al., 2021). Because of their flavonoid concentration, onion cultivars may be effective cardiovascular and anticancer medicines, as well as having hypocholesterolemic, thrombolytic, and antioxidant properties. Flavonols found in onions, including quercetin and kaempferol glycosides, contribute to REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING . . .   111 antioxidant activity and related health benefits (Lee et al., 2014). On an industrial scale, over 37% of fresh onions processed into powders, pickles, or ready-to-eat onion products are wasted as waste. The bulk of onion trash is composed of onion skins and membranes. Onion skins, like other root vegetable debris, are expensive to dispose of and may have significant environmental implications, adding to greenhouse gas emissions like CO₂ and CH₄. Onion peels are increasingly being converted into economically valuable byproducts that do not harm the environment (Zhang et al., 2024). Onion skins include bioactive substances such as phenolics, flavonoids, and flavanols, along with carbohydrates, dietary fiber, and S-alk (en)yl-L-cysteine sulfoxides (Elsebaie & Essa, 2018; Hepsağ & Esmer, 2022; Zhang et al., 2024). Onion peels contain more flavonoids than the edible component, with amounts ranging from 2 to 10 g/kg (Albishi et al., 2013b). The phytochemicals found in onion peels are thought to be responsible for their antioxidant properties. Quercetin and its derivatives produce yellow and brown chemicals in onion skins, whereas anthocyanins provide red/purple color (Elsebaie & Essa, 2018; Hepsağ & Esmer, 2022). Onion peels, due to their high antioxidant activity, may be processed into value-added byproducts and functional food items, including flavonoids and probiotics (Zhang et al., 2024). In a study of the antioxidant properties of onion skin extracts generated using ethanol, hot water, and subcritical water extraction, extracts prepared utilizing the subcritical water approach were found to be a rich phenolic source with high antioxidant activity (Lee et al., 2014). In pasta manufacturing studies, onion skin powder was utilized as a replacement for semolina at concentrations of 2.5, 5.0, and 7.5 g/100 g. The addition of onion skin powder boosted the sample’s dietary fiber, ash, total phenolic compounds, flavonoid content, and antioxidant activity. The addition of onion skin powder decreased the optimal cooking time and water solubility index of the samples while improving the a* color value. Sensory investigation revealed that pasta samples containing 2.5% onion skin powder had the greatest overall quality ratings (Michalak-Majewska et al., 2020). In a study conducted by Sagar and Pareek (2020), onion skin powder was added to pizza dough formulations at concentrations of 2%, 3.5%, and 5% as a substitute for wheat flour. As the proportion of onion skin powder increased, the storage modulus (G′) and hardness of the pizza dough also increased. Color analysis of the pizza doughs indicated that the L* value was 86.46 ± 0.39 in the control sample, whereas it decreased to 46.43 ± 0.69 in the sample containing 5% onion skin powder. The addition of onion skin powder also enhanced the phenolic content, total flavonoid content, and antioxidant activity of the pizza 112   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . doughs. Polyphenol fractions from red onion peels were added to cake mixes in both microencapsulated and extract forms. The cake with microcapsules had a greater polyphenol content than the sample with a direct extract addition owing to the protective impact of encapsulation throughout baking. Furthermore, cakes containing microcapsules had increased specific volume, moisture retention, enhanced texture, and better sensory assessment ratings (Elsebaie & Essa, 2018). In research aiming at creating a natural red colorant (anthocyanins) from red onion peels using four different solvents and using it to color food items, acidified ethanol (0.01% HCl) was shown to be the most successful technique of extracting anthocyanins. The anthocyanin extracts were the most stable at low pH levels (2.0 and 3.0). When anthocyanin extracts prepared with acidified methanol were heated for 30 minutes at 40, 60, 80, and 100°C, the retention rates were 99.16%, 98.79%, 91.56%, and 69.45%, respectively. The firm candies colored with 0.3% acidified methanol anthocyanin extracts scored similarly to those colored with the synthetic dye Allure. Furthermore, anthocyanin extracts from all solvents were added at 0.25% to jelly samples, and the sensory evaluation ratings were comparable to those of synthetic colorants (Ali et al., 2016). 4.4.BeetrootPeels Beetroot (Beta vulgaris L.) is a flowering root vegetable that is herbaceous in nature and belongs to the Chenopodiaceae family, with its origins traced back to Asia and Europe. This plant is generally utilized for its palatable, succulent red roots and delicate leaves. In commercial contexts, Beta vulgaris is categorized into three subspecies: B. maritima, B. vulgaris, and B. adanensis. Beets are available throughout the year and are enjoyed globally in various forms such as salads, pickles, and juices (Petropoulos et al., 2019; Nirmal et al., 2021). Approximately 85% of beets are used for processing, of which around 30% becomes waste (El-Beltagi et al., 2022). Beet peel is considered a valuable by-product of agro-industrial production (Evanuarini et al., 2023). Beets are rich in numerous nutritional and bioactive compounds, including nitrates, phenolic acids, ascorbic acid, vitamins, minerals, carbohydrates, fiber, protein, essential amino acids, fatty acids, phytosterols, alkaloids, steroids, carotenoids, and watersoluble pigments known as betalains (Tesoriere et al., 2008; Nirmal et al., 2021). Beets can exhibit a range of colors from yellow to red. They are notable for their natural red-purple pigments called betalains, which are classified into two groups: betacyanins and betaxanthins (Petropoulos et al., 2019; Nirmal et al., 2021; El-Beltagi et al., 2022). Red beet is a root vegetable rich in components REDUCING FOOD WASTE IN SUSTAINABLE AGRICULTURE: UTILIZING . . .   119 Michalak-Majewska, M., Teterycz, D., Muszyński, S., Radzki, W., & Sykut-Domańska, E. (2020). Influence of onion skin powder on nutritional and quality attributes of wheat pasta, PLoS One, 15(1). e0227942. 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Introduction The global process of social, economic, cultural, administrative, and spatial reorganization has also resulted in transformations in rural areas. Concurrently with this shift, rural development policies have undergone a new phase of reorganization (Yenigül, 2017). Strategic planning for rural development emphasizes economic growth alongside sustainable development. Sustainable rural development is crucial for the conservation and enhancement of resources (Curcic et al., 2021). In the contemporary global landscape, where the sustainability of rural areas and the economic diversification of agricultural regions are paramount, agrotourism surfaces as a critical strategy for sustainable development (Turtureanu et al., 2025). Agricultural tourism has emerged as a defining aspect of contemporary rural sustainability. It signifies a commercial reality for rural entrepreneurs and a crucial opportunity for rural towns with tourism potential. Besides serving as a tourism modality where travelers can acquire premium products at competitive 122   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . prices, it represents an environmentally sustainable sector that can guarantee long-term development (Ciolac et al., 2021). Agrotourism provides a sustainable future for rural development by enhancing infrastructure and associated services in rural regions. The diverse functions of sustainable agrotourism alleviate poverty and enhance farmers’ income, thereby offering a more stable avenue for rural development (Faganel, 2011). This section elucidates agrotourism as a novel paradigm for rural development, beginning with an explanation of the idea of rural development. The notion of agrotourism is delineated, followed by an examination of innovative practices and exemplary models within the context of sustainability. 2. Rural Development Since the Industrial Revolution, rural communities have encountered various obstacles, including diminished commodity prices, rising input costs, environmental pressures, and the impacts of globalization. Farmers have increasingly been compelled to vacate their farms and pursue employment elsewhere, resulting in the transfer of economic activities and populations to urban regions. As a result, rural areas have undergone economic, social, and environmental deterioration (Ammirato et al., 2020). Rural towns have experienced significant changes, including the transfer of populations and economic activities to urban centers, as well as a reduction in the agricultural sector, which had historically been paramount for production, welfare, and employment. These phenomena have precipitated a crisis in the conventional structures and organization of rural areas, rendering them susceptible to economic, social, and environmental decline. Rural areas currently face numerous challenges, including increasing unemployment rates, migration, soil degradation, hydrogeological instability, and the erosion of traditions (Ammirato & Felicetti, 2014). Rural development refers to the overall enhancement of the economic and social wellbeing of individuals residing in rural regions, including improvements in the institutional and physical settings they inhabit. Currently, the notion of rural development has evolved into a multifaceted paradigm, transcending mere economic considerations to encompass the safeguarding of natural resources and landscapes, while prioritizing the enhancement and appreciation of both tangible assets (including infrastructure, monuments, and local cuisine) and intangible assets (such as cultural heritage, traditions, and historical narratives) (Ammirato et al., 2020). AGROTOURISM AND SUSTAINABILITY: NEW APPROACHES IN RURAL . . .   123 Rural development, arising from globalization and international accords that have transformed conventional agricultural production systems, embodies a novel strategy aimed at addressing the challenges faced by rural regions. It employs a holistic approach that includes environmental, economic, and social factors while evaluating regional attributes to maintain the system (Demirbaş Topcu, 2007). Rural development encompasses the processes, activities, and organizations designed to enhance production, income, and welfare in a manner that transforms the socio-economic and cultural framework of rural communities, eradicates disparities, establishes comparable physical and social infrastructure to that found in urban centers, and optimizes the utilization of agricultural products (Çeken, Karadağ & Dalgın, 2007). The notion of rural development originated in the early 19th century and has experienced several transformations in accordance with global advancements until the present time. Since the 1980s, significant transformations in rural development strategies have occurred globally. Growth-centric political agendas have progressively been supplanted by comprehensive development initiatives that involve the entire society. The primary aim of rural development is to reduce the socio-cultural and economic disparities between urban and rural areas by effectively utilizing the resources of rural regions, enhancing employment opportunities in the countryside, curbing urban migration, and elevating the living standards of rural populations (Çeken, Karadağ & Dalgın, 2007). Rural development is characterized by the diversification of products and services in response to evolving technology, the rise of new markets, and the subsequent reorganization of agriculture and rural regions to enhance the economic, social, and cultural frameworks of rural communities (Ata & Dallı, 2024). Agriculture is recognized as essential for alleviating poverty and fostering rural development; likewise, agricultural tourism is thought to invigorate rural development by positively impacting the environment, landscape, and population decline (Ammirato & Felicetti, 2014; Lupi et al., 2017). Topics such as organic farming, sustainable tourist development, rural tourism, agrotourism, and ecotourism are increasingly prevalent in scholarly literature owing to their beneficial effects on rural development. The advancement of agricultural and tourism industries enhances the welfare of rural communities and fosters rural development. In industrialized countries, sustainable development has been facilitated by agricultural advancements and 124   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . the encouragement of rural tourism, resulting in beneficial changes in rural regions. This strategy has led to substantial economic transformations in regions. Promoting the advancement of the agriculture sector generates employment prospects for rural communities (Romanenko et al., 2020). 3. Agrotourism Agrotourism has become significant as a strategic instrument for advancing sustainable development objectives, especially regarding rural population decline and the evolution of agricultural production systems. This form of tourism embodies the core tenets of sustainable development, encompassing economic advancement, social equity, and environmental conservation. Integrating cultural and ecological values into agriculture’s economic role fosters the sustainable utilization of natural resources (FAO, 2023). Moreover, the capacity of local people to convert their production activities into tourism experiences enhances the comprehension of local development in rural regions and fosters grassroots, knowledge-driven, and participatory development methodologies. In this regard, agrotourism functions as both an economic instrument and a holistic tool that promotes social and environmental sustainability. Post-Covid-19 epidemic, there has been an increasing inclination towards healthy, environmentally harmonious, and low-density places. In this environment, agrotourism has gained significant prominence in personal preferences and worldwide tourism regulations (UNWTO, 2024). The pandemic reinstated this form of tourism as a resilient and sustainable alternative, evolving it into a multifaceted domain that includes economic diversification, environmental preservation, and cultural heritage conservation. The agrotourism market, valued at 3.5 million USD in 2024, is anticipated to increase to 5 million USD by 2034 (Future Market Insight, 2025). This expansion signifies both the sector’s economic potential and the rising societal interest in this domain (Aldrict, 2025). The trend indicates that agrotourism has undergone a continuous change, functioning not just as a crisis option but also as a sustainable model that fosters rural development. Agrotourism serves as a dynamic mechanism that bolsters local economies, boosts community resilience, and promotes reverse migration from urban to rural regions within the context of sustainability-oriented rural development strategies implemented by numerous countries (OECD, 2023). Agrotourism, with its cohesive framework, transcends mere tourism; it serves as a transformative development model that unites production, consumption, and experiential learning within a singular spatial setting. Agrotourism operations enhance the AGROTOURISM AND SUSTAINABILITY: NEW APPROACHES IN RURAL . . .   125 diversification of rural economies while sustaining agricultural production. They facilitate local community engagement in the economic framework via tourism, therefore promoting equilibrium in regional revenue distribution and enhancing social participation. Agrotourism is primarily defined as a form of tourism that integrates agricultural production with tourism experiences, promoting economic, social, and environmental sustainability in rural regions. This method relies on tourists’ active engagement with agricultural life—observing production processes, participating in them, familiarizing themselves with local products, and mingling with rural culture. The Food and Agriculture Organization (FAO, 2023) characterizes this notion as the evolution of agriculture from a simple production endeavor into an experience learning environment. Agrotourism diversifies income streams for local residents, enhances rural living standards, and concurrently safeguards traditional knowledge and environmental consciousness (Çelik Çanga, Kutlu & Çalışkan, 2018). The importance of agrotourism has risen, especially during times of declining agricultural revenue, rural youth migration to urban areas, and the economic vulnerability of small-scale producers. According to reports by the OECD (2006) and UNWTO (2024), agrotourism is characterized as a mechanism that enhances economic vitality in rural regions, augments the added value of agricultural products, and generates sustainable employment opportunities. In this context, agrotourism directly corresponds with the United Nations Sustainable Development Goals (SDGs), specifically SDG 8 (Decent Work and Economic Growth), SDG 12 (Responsible Production and Consumption), and SDG 13 (Climate Action), which are intricately linked to the aims of sustainable rural tourism (UNWTO, 2024). The Food and Agriculture Organization (FAO, 2023) underscores that agrotourism promotes climate-resilient agricultural practices, bolsters financial security for farmers, and diversifies their livelihoods. This type of tourism facilitates knowledge exchange among farmers, tourists, and local communities, enhancing understanding of environmental sustainability and responsible consumerism. 4. Components and Types of Agrotourism Agrotourism is a multifaceted phenomena situated at the convergence of economic output, social engagement, cultural legacy, and environmental awareness. To comprehend its structure, it is essential to determine its core components. Agrotourism is fundamentally characterized by farm activities, engagement with agricultural techniques, and authenticity (Phillip, Hunter & Blackstock, 2010). 126   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . The phrase “working farm” denotes the direct association of tourism activities with authentic agricultural production processes. The “interaction” component indicates the level of tourist involvement in or observation of the manufacturing process, whereas “authenticity” delineates the extent to which the experience is genuine, local, and culturally significant. A harmonious integration of these aspects amplifies the sustainability prospects of agrotourism. The OECD (2023) asserts that for agrotourism to be considered an innovative model in rural economies, it must produce economic, social, and environmental advantages. Agrotourism includes social, cultural, and environmental aspects. Soeswoyo, Dina Mayasari, and Sudaryanto (2022) emphasize in their research of Cimande Village, Indonesia, that agrotourism functions as a source of revenue while also promoting social solidarity, cultural interchange, and environmental consciousness. In many instances, agrotourism serves as a developmental paradigm facilitated by the collective involvement of local residents. Farsani, Ghotbabadi, and Altafi (2019) assert that the amalgamation of agricultural heritage with creative tourism aids in the conservation of both tangible (e.g., traditional irrigation systems) and intangible (e.g., agricultural rituals and craftbased production techniques) cultural values. This approach is consistent with the FAO’s (2023) Globally Important Agricultural Heritage Systems (GIAHS) initiative, which underscores the necessity of preserving local communities’ knowledge and traditions in conjunction with economic development and ecological equilibrium. The types of agrotourism are classified according to the degree of interaction that visitors establish with agricultural activities and the intensity of the experience. Phillip et al. (2010) identify five main types of agrotourism: · Non-Working Farm (NWF): Tourism that is not directly related to agricultural activities but benefits from the rural landscape. · Working Farm – Indirect Contact, Secondary (WFDCS): Farms that are visited indirectly for tourism purposes. · Working Farm – Primary Contact (WFPC): Models where farm accommodation plays a central role. · Working Farm – Direct Contact, Active (WFDCA): Visitors actively participate in production processes. · Hybrid or integrated models that combine educational, cultural transmission, or handicraft-oriented practices. AGROTOURISM AND SUSTAINABILITY: NEW APPROACHES IN RURAL . . .   127 The report on the Main Types and Profit Model of Agricultural Tourism (2020) indicates that each type utilizes distinct income models, including direct sales, educational services, accommodation, and experiential activities; however, sustainable success necessitates comprehensive models that prioritize both social benefit and economic profit. Nonetheless, contemporary agrotourism extends beyond the aforementioned categories. It develops in response to world occurrences and societal processes. In recent years, agrotourism operations have further diversified through the integration of creative tourism, heritage-based tourism, and environmentally sustainable practices. The UNWTO (2024) report characterizes this change as “new-generation rural tourism,” highlighting that digitalization and environmentally sustainable technology have enhanced the sustainability of agrotourism. In this context, agrotourism has evolved from a solely farm-centric activity into a multifaceted development instrument that incorporates education, cultural production, digital marketing, and carbon-neutral tourism practices. 5. New Approaches in Agrotourism The significance of sustainable development goals worldwide has expedited the emergence of innovative tourist models that bolster economic resilience in rural regions, fortify environmental conservation, and promote community-oriented production. In this setting, agrotourism has evolved from a simply economic tool for rural development to a multifaceted sustainability strategy that incorporates digital transformation, social entrepreneurship, creative business models, and climate adaptation measures. The FAO’s (2023) “Digital Agriculture and Resilient Agrotourism” strategy delineates the amalgamation of agricultural output with tourism as a mechanism that enhances environmental adaptability and rural resilience. Likewise, UNWTO (2024) underscores that the proliferation of digital technologies, new network frameworks, and inclusive tourist practices in rural areas propels local development. In recent years, three primary dimensions have emerged in the evolution of agrotourism: digital transformation, creative business models, and initiatives for climate adaptation and resilience. The OECD’s (2023) Smart Rural Policy Framework 2.0 report emphasizes that smart villages and digital agriculture apps are essential for the sustainable management of rural areas. Digital technologies are establishing a novel economic landscape wherein farmers can directly promote their products, facilitate online agro-tours, and enhance tourism 128   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . attractiveness through virtual experiences. The European Commission’s (2022) EU Rural Vision 2040 document endorses this transformation by delineating the “smart transformation” process of rural regions through components such as the advancement of digital infrastructure, the shift to renewable energy, and the encouragement of youth engagement in agricultural entrepreneurship. Innovative business concepts link agrotourism with community-oriented development activities. In rural development, cooperatives (agricultural, women’s, youth, etc.), social enterprises, and short supply chains bolster the resilience of local economies. The World Bank’s (2023) Agriculture and Rural Development Brief indicates that enhanced agricultural productivity diminishes rural poverty and fosters the expansion of small-scale firms. This discovery validates the “multiplier effect” of agrotourism in bolstering local production and jobs. IFAD (2022) highlights the capacity of agrotourism for social innovation in diversifying income streams for rural communities and facilitating adaptation to climate change. Thus, agrotourism is perceived as a model of social entrepreneurship that fosters employment for women and youth, enhances the branding of local products, and fortifies community-based development. The third axis of transformation—strategies for climate change adaptation and resilience—positions agrotourism as a leading domain in environmental sustainability. FAO (2023) and UNWTO (2024) emphasize that the incorporation of climate-resilient agricultural practices, agroecological techniques, carbon footprint mitigation, and green certification initiatives within agrotourism enhances the environmental resilience of rural locales. This method integrates environmental consciousness into the tourism experience while guaranteeing the sustainable stewardship of natural resources. Dudziak, Komarnytskyi, and Knapczyk (2017) define agrotourism as a framework that integrates the social, economic, and cultural facets of rural development. In conclusion, agrotourism nowadays is not simply a form of tourism in rural locales, but an innovative domain at the convergence of sustainable development, digital transformation, and climate adaption policies. In this new paradigm, where local knowledge systems are enhanced by digital technologies, novel production models are regulated through participatory methods, and environmental adaptability capabilities are fortified, agrotourism serves as a practical laboratory for sustainability. 5.1.DigitalTransformationinAgrotourism Digital transformation is a pivotal trend that has significantly altered the framework of agrotourism. Traditionally, rural economies focused on AGROTOURISM AND SUSTAINABILITY: NEW APPROACHES IN RURAL . . .   135 Romania / Poland Women’s Cooperatives and Social Enterprises – Women’s participation in agricultural production and tourism activities (Stanciu et al., 2024). Increased women’s employment, strengthened social inclusion, and reinforcement of local solidarity networks. Climate Adaptation and Environmental Resilience Iceland Carbon-Neutral Farms Program – Integration of renewable energy use, carbon offsetting, and agroecological production systems (UNWTO, 2024). Reduction of carbon emissions, heightened environmental awareness, and a sustainable tourism model. Bali – Indonesia Agroedutourism Based on Smart Farming – A tourism experience model promoting environmental awareness through precision farming technologies (Sumiasih, Puspitawati & Yadarabullah, 2025). Conservation of natural resources, increased environmental sensitivity, educational contribution. Source: The table was created by the authors. The exemplary practices chosen globally in agrotourism illustrate the significance of concurrently tackling digital transformation, innovative business models, and climate adaptation to attain sustainable rural development objectives. The digital agrotourism models established in Indonesia and Romania have expedited the digitalization of rural economies by enhancing information accessibility for producers and tourists via smart agricultural technologies and online networks. The farm-to-table and short supply chain methodologies adopted in Italy and France have enhanced the linkage between producers and consumers, fostered the branding of local products, and diminished carbon footprints. Instances of women’s cooperatives in Romania and Poland have augmented the social entrepreneurship aspect of agrotourism by facilitating women’s 136   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . economic involvement in rural regions. The agrotourism practices in Iceland and Bali, grounded in environmental resilience, demonstrate a climate-sensitive approach to tourism through the integration of renewable energy, agroecological production, and environmental education initiatives. Collectively assessed, these instances demonstrate that agrotourism is not solely an economic endeavor but a dynamic development paradigm situated at the convergence of technical innovation, social inclusion, and environmental sustainability. 7. Conclusion The comprehension of rural development, focused on the economic, cultural, and environmental progress of rural areas, is currently being reinterpreted by the concepts of sustainability. In this context, agrotourism presents a vital development strategy that sustains agricultural output while generating new economic prospects in rural regions via tourism. Sustainable agrotourism fosters the effective and responsible utilization of current resources, enhances the well-being of local populations, and supports the sustainability of rural existence. The incorporation of digitization and technical innovation into agriculture enhances the efficacy of agrotourism; concepts like “smart villages” exemplify this transition. Furthermore, in accordance with the evolving tourist demographic, the expansion of experience-oriented tourism has imparted a novel dimension to agrotourism by providing visitors the chance to engage directly with local production processes, thus fostering a form of tourism that is congruent with sustainable development objectives. The extensive implementation of climate-friendly farming methods to alleviate the detrimental impacts of climate change promotes environmental sustainability and the ongoing viability of rural tourism operations. 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Introduction The concept of food security is not only about producing a sufficient quantity of food but also about ensuring that this food is accessible, nutritionally adequate, and provided in a stable manner. In the modern era, many new dynamics have emerged that make it more difficult to guarantee this security. First and foremost, the effects of climate change directly threaten agricultural productivity; extraordinary weather events such as famine, excessive rainfall, and drought reduce crop production capacity in many regions (Jiang et al., 2024). In addition, population growth and the pressure of urbanization lead to a decrease in arable land and the depletion of water resources, which in turn affects the continuity of food supply (Gray et al., 2024). Another significant challenge is economic and social inequalities: rising food prices make it difficult for households with low income levels to access balanced and nutritious food; at the same time, vulnerabilities in supply chains (such as logistical problems, energy costs, and disruptions like pandemics) threaten access to supply (Şahin et al., 2023). In addition, food loss and waste stand out as another major problem that disrupts resource use, contributing both to economic losses and environmental unsustainability (Şahin et al., 2023). Moreover, political uncertainties, conflicts, migration movements, and global health crises (e.g., the COVID-19 pandemic) weaken the “stability” aspect of food production and distribution systems (Sonnino et al., 2014). Consequently, food security can 142   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . only be ensured through multidimensional policy interventions, the integration of agricultural, environmental, economic, and social justice policies, and the promotion of resilience and sustainable innovations within food systems. 2. Food Security and Modern Challenges The impacts of climate change on agricultural production and, consequently, on food security in Turkey have been documented by numerous studies. A study conducted by Chandio et al. (2021) found that climate variables such as temperature, precipitation levels, and CO₂ emissions negatively affect the production of key agricultural products such as wheat and rice in both the short and long term. This study also reported that rural infrastructure and economic variables such as agricultural land area (e.g., cultivated land), agricultural credit, and labor positively influence production, while climate pressures, particularly the combination of temperature and emissions, increasingly play a detrimental role (Chandio et al., 2021). Another significant study analyzed, through econometric methods, the relationships between food grain losses and food imports, food prices, and economic growth for the period 1991–2019. Among the findings, it was emphasized that increasing grain losses reduce food security and that rising losses contribute to higher food prices (Ahmed et al., 2023). Natural disasters such as earthquakes also have disruptive effects on food security. One study reported that after natural disasters, disruptions in the food supply chain, along with interruptions in distribution and storage processes, lead to nutritional problems in affected regions (Çakır et al., 2025). Additionally, the recent Russia–Ukraine war and global trade disruptions have been identified as major factors increasing food price inflation in Turkey, raising import and supply chain costs. Combined with energy price hikes, freight costs, and the vulnerability of logistics infrastructure, these challenges directly affect consumer prices and the access of low-income households to food (Ozturk & Faizi, 2023). Globally, the strongest current threat to food security is climate change: rising temperatures, increasing extreme weather events (droughts, floods, and heat waves), and shifting rainfall patterns are disrupting agricultural productivity both temporally and spatially; this deeply undermines the food security of populations practicing rainfed, small-scale farming (Li et al., 2024). The second major challenge is supply chain fragility: the COVID-19 pandemic, disruptions in international trade, and logistical bottlenecks have caused breaks in production–processing–distribution chains, undermining access to supply and price stability; this impact has especially reduced food security in vulnerable GENETIC MODIFICATIONS AND BIOTECHNOLOGICAL APPLICATIONS . . .   143 country groups (Panghal et al., 2022). Third, conflict and political instability disrupt food flows between regions, trigger mass displacement and humanitarian crises, and increase acute hunger cases; recently, conflict has been identified as the leading cause of acute food insecurity in a growing number of countries (You et al., 2022). Economic shocks (inflation and energy and fertilizer costs) and disruptions in global trade are reducing low-income households’ access to calorieand nutrient-rich foods; this, in turn, drives undernutrition and micronutrient deficiencies (FAO, 2022).To address these multi-layered threats, the scientific literature emphasizes holistic and multi-sectoral approaches rather than isolated solutions: climate-resilient farming practices and crop varieties, strengthening local production, infrastructure that enhances supply chain resilience, and data-driven early warning systems, alongside food loss reduction policies, social safety nets, and protective economic measures against price volatility (such as targeted subsidies and food stock management). For these policies and interventions to be effective, international cooperation, strengthening of local implementation capacity, and the establishment of longterm financing mechanisms are frequently highlighted in scientific studies (Guiné, 2024). 3. Genetic Modification: Fundamentals and Methods The concept of genetically modified organisms (GMOs) refers to the alteration of an organism’s genome through human intervention by adding new genetic information, modifying existing genes, or silencing specific target genes. In the modern sense, the first commercial applications of GMOs emerged in the 1990s and have since become widespread to rapidly improve both agricultural productivity and crop traits. Today, gene-editing tools provide precision, speed, and target specificity that go beyond traditional selection methods (such as selective breeding or mutagenesis). While conventional approaches require multiple generations and induce broad, uncontrolled genomic changes, genetic engineering and gene-editing techniques can directly target specific steps for example, introducing a single nucleotide change or silencing a particular gene (Raman, 2017). The CRISPR–Cas9 system uses short guide RNAs to recognize specific locations in the genome and create double-strand breaks, enabling a wide range of modifications from point mutations to targeted gene deletions through the cell’s natural repair mechanisms. This technology has accelerated plant breeding and revolutionized the improvement of traits such as resistance, yield, and 144   SUSTAINABILITY IN AGRICULTURE: SMART TECHNOLOGIES . . . nutritional quality in various species (Gan & Ling, 2022). Similarly, methods such as TALEN (Transcription Activator-Like Effector Nucleases) and the earlier ZFN (Zinc Finger Nucleases) generate targeted double-strand breaks to induce genome edits. TALENs contributed significantly in terms of specificity and design flexibility; however, the ease of use and multiplexing capability of CRISPR have made it the more widely adopted tool in a relatively short time. RNA interference (RNAi), on the other hand, does not directly modify DNA but reduces gene expression at the mRNA level through homology-based silencing mechanisms. In plant biotechnology, RNAi has been applied to various purposes, from pathogen resistance to altering nutritional composition, either in combination with or independently of other gene-editing tools (Xu et al., 2019). The fundamental differences between traditional selection (conventional breeding, mutation breeding, and hybridization) and modern genetic engineering can be summarized as follows: speed (molecular methods can directly intervene in the target genome, reducing processes that would take years to just months), specificity (genetic engineering can create precise gene/sequence modifications, whereas traditional methods rely on random combinations within the gene pool), and the introduction of new functions (transgenic approaches can transfer entirely new gene functions). However, modern methods present distinct challenges in terms of regulatory frameworks, environmental considerations, and societal acceptance. In the growing body of literature, both cost–benefit analyses and risk assessments are widely discussed to evaluate the implications of these advanced techniques (Hamdan & Tan, 2023). A study on rice tungro disease showed that by using CRISPR–Cas9 to knock out the eIF4G gene, non-transgenic but resistant rice lines were developed; these lines displayed resistance to the disease while also retaining agronomically desirable traits suitable for cultivation (Ahmad et al., 2021). In another study, editing the OsGA20ox2 gene in rice resulted in approximately a 6% yield increase but also led to reduced gibberellin levels, plant height, and flag leaf length. Consequently, more compact plants with greater resistance to lodging and disease were obtained (Sharma et al., 2025). In potatoes, targeting the StPPO2 (polyphenol oxidase 2) gene with CRISPR reduced tuber browning by 73% and PPO (polyphenol oxidase) activity by 69%, significantly improving the quality of processed potato products (Saini et al., 2025). For RNA interference (RNAi) and pest control, a plastid-mediated RNAi (PM-RNAi) approach was applied in tobacco plants, where long dsRNA molecules were expressed from