List of Contributorsxvi
Foreword xxi
Preface xxiii
1 Innovative Approaches and Cutting- Edge Methods in Next- Generation Fertilizer Production and Characterization 1
Erdogan E Hakki, Waseem Ahmed Khattak, Muhammad Anas, Javed Iqbal, Banzeer Ahsan Abbasi, Ziaur Rehman, and Shah Fahad
1.1 Introduction 1
1.1.1 Background and Significance 1
1.1.2 Need for Advanced Fertilizer Technologies 2
1.1.3 Environmental and Agricultural Challenges 2
1.2 Classification of Next- Generation Fertilizers 3
1.2.1 Controlled- Release Fertilizers (CRFs) 3
1.2.2 Nano- fertilizers 4
1.2.3 Bio- based and Organic Fertilizers 4
1.2.4 Smart and Responsive Fertilizers 5
1.3 Innovative Synthesis and Fabrication Methods 6
1.3.1 Nanoencapsulation Techniques 6
1.3.2 Green Chemistry Approaches 7
1.3.3 Sol- Gel and Hydrothermal Processes 7
1.3.4 3D Printing and Precision Formulation 8
1.4 Functional Materials in Fertilizer Design 9
1.4.1 Polymeric Carriers and Hydrogels 10
1.4.2 Biodegradable Coatings 10
1.4.3 Stimuli- Responsive Materials 11
1.4.4 Use of Agricultural and Industrial Waste 11
1.5 Characterization Techniques 12
1.5.1 Physicochemical Analysis (SEM, TEM, FTIR, XRD) 13
1.5.2 Release Kinetics and Nutrient Profiling 14
1.5.3 Stability and Shelf- Life Evaluation 14
1.5.4 Soil- Fertilizer Interaction Studies 15
1.6 Application Strategies and Agronomic Impacts 15
1.6.1 Field Trials and Yield Performance 16
1.6.2 Nutrient Use Efficiency (NUE) 16
1.6.3 Soil Health and Microbial Dynamics 16
1.6.4 Crop- Specific Formulations 17
1.7 Environmental and Economic Considerations 17
1.7.1 Life Cycle Assessment (LCA) 18
1.7.2 Cost- Benefit Analysis 18
1.7.3 Eco- toxicity and Regulatory Aspects 19
1.8 Conclusion 19
References 20
2 Revolutionizing Farming: The Rise of Next- Generation Fertilizers 25
Sharjeel Haider, Nosheen Mirza, Guangda Ding, Muhammad Anwar- ul- Haq, Khadija Bibi, Venuste Munyaneza, Iftikhar Ali Ahmad, Muhammad Mehran, Sidra Sohail, Asma Zafar, Dua e Zainab, and Bushra Huma
2.1 Introduction: The Future of Farming 25
2.2 The Science Behind Next- Generation Fertilizers 26
2.2.1 Nanotechnology in Fertilizers 28
2.2.2 Microbial Innovations in Next- Generation Fertilizers 29
2.2.2.1 Endophyte 29
2.2.2.2 Cyanobacteria 29
2.2.3 Enhanced Efficiency Fertilizers (EEFs) 30
2.3 Control- Released Fertilizers: Maximizing Efficacy 30
2.3.1 Main Types and Mechanisms of CRFs 31
2.3.1.1 Polymer- Coated Fertilizers (PCFs) 31
2.3.1.2 Sulfur- Coated Fertilizers (and Polymer- Sulfur- Coated) 31
2.3.1.3 Matrix- Based Fertilizers 33
2.3.1.4 Chemically Bound/Slowly Soluble Compounds 33
2.3.2 Challenges and Limitations for Current CRFs 34
2.3.3 Next- Generation Innovations 34
2.3.3.1 Biodegradable Coatings and Bio- based Matrices 35
2.3.3.2 Smart/Stimuli- Responsive Fertilizers 35
2.3.3.3 Nano- fertilizers and Nano- encapsulation 35
2.4 Bio- based and Organic Fertilizers: Nature Meets Innovation 36
2.4.1 Nitrogen- Fixing Bacteria 37
2.4.2 Phosphate- Solubilizing Microorganisms 37
2.4.3 Bioreactors for Bio- based Fertilizer Production 38
2.4.4 Nutrient Cycling and Bio- based Fertilizers 38
2.4.5 Future Directions for Bio- based Fertilizers 38
2.4.5.1 Integration with Precision Agriculture 38
2.5 Nano- enhanced Fertilizers: Tiny Particles, Big Impact 39
2.6 Precision Farming: Fertilizer and Digital Innovation 41
2.6.1 Key Technologies in Precision Fertilization 41
2.6.2 Digital Innovations in Fertilizer Management 45
2.6.2.1 AI- Powered Systems 45
2.6.2.2 Blockchain Technology 45
2.6.2.3 Smart- Farming System 45
2.6.3 Challenges in Adoption 45
2.6.3.1 High Initial Investment and Lack of Technical Expertise 45
2.6.3.2 Data Privacy and Connectivity Issues in Rural Areas 46
2.6.3.3 Smallholder Farmer Accessibility 46
2.6.4 Future Trends 46
2.7 Challenges to Adoption: Bridging the Gap 47
2.7.1 Economic Factors 47
2.7.2 Education and Awareness 47
2.7.3 Technological Barriers and Regulatory Hurdles 47
2.8 The Future of Fertilizers: Innovation on the Horizon 49
2.9 Conclusion 49
References 50
3 Bioactive- Based Fertilizers: Harnessing Biostimulants, Nutrients, and Signaling Molecules for Enhanced Plant Growth 61
Muhammad Nauman Khan, Tooba, Nasir Assad, Alevcan Kaplan, Yasir Assad, Rao Muhammad Faisal Iqbal, and Shah Fahad
3.1 Introduction to Bioactive- Based Fertilizers 61
3.2 Biostimulants: Unlocking the Power of Natural Growth Regulators 63
3.3 Nutrient Delivery Systems: Enhancing Bioavailability and Uptake 66
3.4 Signaling Molecules: Facilitating Plant Growth and Stress Resistance 69
3.5 Inorganic and Organic Molecules in Bioactive Fertilizers 71
3.6 Revolutionizing Nutrient Delivery with Nanoscale Precision 73
3.7 Synergistic Effects: Combining Biostimulants, Nutrients, and Signaling Molecules 75
3.8 Applications of Bioactive Fertilizers in Modern Agriculture 78
3.9 Challenges in Developing Bioactive Fertilizers 82
3.10 The Future of Bioactive- Based Fertilizers 84
3.11 Conclusion 85
References 86
4 The Nano- fertilizer Advantage: Tiny Particles, Big Impact on Agriculture 91
Nasir Assad, Muhammad Naeem- ul- Hassan, Muhammad Nauman Khan, Sharia Fatima, Sher Ullah, and Syeda Zainab Batool
4.1 Introduction to Nanotechnology in Agriculture 91
4.2 Understanding Nanoparticles: Structure and Function 93
4.3 Nano- enhanced Fertilizers: Improving Nutrient Delivery 95
4.4 Nanotechnology for Environmental Sustainability 98
4.5 The Benefits of Nano- fertilizers in Crop Yield and Quality 99
4.6 The Future of Nanotechnology in Fertilizer Development 102
4.7 Conclusion: Harnessing the Nano Advantage for Sustainable Agriculture 103
References 103
5 Advancing Fertilizer Technology: Enhancing Nutrient Use Efficiency (NUE) for Sustainable Crop Production 107
Sameel Hassan, Waseem Ahmed Khattak, Muhammad Anas, Javed Iqbal, and Banzeer Ahsan Abbasi
5.1 Introduction 107
5.2 Nutrient Use Efficiency: Concepts and Global Relevance 108
5.3 Limitations of Conventional Fertilizers 110
5.4 Innovations in Fertilizer Technology 112
5.4.1 Slow- and Controlled- Release Fertilizers 112
5.4.2 Nano- fertilizers 113
5.4.3 Bioformulated and Coated Fertilizers 113
5.5 Role of Precision Agriculture in Enhancing NUE 113
5.6 Microbial Interventions and Organic Nutrient Sources 115
5.7 Environmental and Economic Implications 116
5.8 Policy, Regulatory, and Adoption Challenges 117
5.9 Future Perspectives and Research Directions 119
5.10 Conclusion 120
References 120
6 Global Perspectives: The Role of Next Generation Fertilizers in Feeding the World 125
Faisal Nadeem, Sundas Abbas, Ali Hasnain, Hina Jabeen, Tayyaba Samreen, Rubab Sarfaraz, Saif Ullah Masood, Rahib Hussain, Rashid Mahmood, Faiza Waseem, and Wajih ul Hassan
6.1 Introduction: The Global Challenge of Feeding a Growing Population 125
6.2 Current Fertilizer Use Around the World 127
6.2.1 Synthetic Fertilizers 127
6.2.2 Next- Generation Fertilizers 129
6.2.3 Nanofertilizers 129
6.2.4 Slow- Release Fertilizers (SRFs) 130
6.2.5 Controlled- Release Fertilizers 131
6.3 The Need for Sustainable Fertilizer Solutions 131
6.4 Next- Generation Fertilizers: A Global Game Changer 132
6.4.1 Environmental Impact 132
6.4.2 Economic Benefits 134
6.4.3 Social and Food Security Implications 134
6.5 Overcoming Barriers to Adoption in Low- Income Regions 134
6.5.1 Barriers to Adoption 134
6.5.2 Strategies for Overcoming Barriers 135
6.6 The Role of International Collaboration in Advancing Fertilizer Technology 136
6.6.1 Collaborations Within the Existing Framework of NGFs 136
6.7 The Future of Fertilizer Innovation: Global Prospects and Trends 138
6.8 Feeding the World in a Changing Climate 139
6.8.1 Fertilizer Solutions for Climate- Resilient Agriculture 139
6.8.2 Integrating Fertilizer Use with Climate Adaptation Strategies 140
6.9 Conclusion 140
References 141
7 Enhancing Crop Resilience to Biotic and Abiotic Stresses Through Advanced Fertilizer Technologies 151
Muhammad Nauman Khan, Hansa Gul, Nasir Assad, Arshad Ali, Sher Ullah, Sofia Nazar, Haris Ahmed Khan, and Shah Fahad
7.1 Introduction 151
7.2 Understanding Biotic Stresses 153
7.3 Understanding Abiotic Stresses: Drought, Salinity, Temperature Extremes 154
7.4 Mechanisms of Stress Tolerance in Plants: The Role of Fertilizers 156
7.5 Next- Generation Fertilizers for Biotic Stress Management 157
7.6 Fertilizer Innovations for Abiotic Stress Resistance 158
7.7 Fertilizer Coatings and Delivery Systems for Stress Management 160
7.8 The Condition of Soil and Stress Resistance 161
7.9 Applying Fertilizer Technologies Alongside Other Pressure- Reduction Methods 162
7.10 Future Directions: Fertilizer Research Dedicated to Enhancing Resistance to Stresses 162
7.11 Conclusion 163
References 164
8 Balancing the Soil: Enhancing Fertilizer Use Efficiency and Soil Health 169
Yasir Assad, Muhammad Nauman Khan, Hansa Gul, Zahida Nasreen, Nasir Assad, Iram Zahra, and Alevcan Kaplan
8.1 Introduction 169
8.2 Understanding Soil Health: Key Principles and Components 170
8.3 The Impact of Fertilizers on Soil Health 171
8.4 Fertilizer Use Efficiency: Maximizing Nutrient Uptake and Minimizing Waste 172
8.5 Advances in Fertilizer Technology for Improved Efficiency 173
8.6 Integrated Nutrient Management (INM): Optimizing Fertilizer and Organic Inputs 174
8.7 The Role of Microbial Inoculants in Fertilizer Efficiency 176
8.8 Strategies for Enhancing Soil Health and Fertilizer Use Efficiency 177
8.9 Traditional Agronomic Practices 177
8.10 Precision Agriculture and Data- Driven Nutrient Management 178
8.11 Innovative Technological Approaches 179
8.12 Toward an Integrated Framework 180
8.13 Policy and Economic Considerations for Improving Fertilizer Efficiency 180
8.14 Conclusion 181
References 182
9 Synergistic Effects of Diverse Fertilizer Bioactivities on Crop Growth and Soil Health 185
Tauqeer Ahmed Qadri, Amjid Khan, Rashid Abbas Khan, Shabbar Abbas, Abdul Wahab, Anam Fatima, Shah Fahad, and Muhammad Anas
9.1 Introduction 185
9.1.1 Fertilizers and Global Food Security 185
9.1.2 The Emergence of Fertilizer Synergy 186
9.2 Understanding Bioactive Components in Fertilizers 187
9.2.1 Chemical Fertilizers: NPK and Micronutrients 187
9.2.2 Biological Inputs: PGPR, Mycorrhizae, and Biostimulants 188
9.2.3 Organic Amendments: Compost, Manure, and Biochar 188
9.2.4 Nanofertilizers and Smart Fertilizers 189
9.3 Mechanism of Fertilizers Synergy: Interactions Among Bioactivities 189
9.3.1 Nutrient Availability and Uptake Efficiency 190
9.3.2 Soil- Plant- Microbe Signaling 190
9.3.3 Stress Tolerance Mechanisms 191
9.3.4 Synergy in Nutrient Cycling and Soil Enzyme Activity 192
9.4 The Role of Fertilizer Coatings and Carriers in Enhancing Synergies 192
9.4.1 Slow- Release and Controlled- Release Coatings 193
9.4.2 Nanocarriers and Polymer- Based Fertilizers 194
9.4.3 Carriers for Microbial Inoculants 194
9.5 Biological Fertilizer Innovations: Exploring Synergies with Advanced Technologies 195
9.5.1 Microbial Consortia and Engineered Inoculants 195
9.5.2 Synthetic Biology and Gene- Edited Microbes 196
9.5.3 Integration with Digital Agriculture and Precision Farming 196
9.6 Soil Health and Fertilizers Synergies: Long- Term Benefits for Soil Fertility 196
9.6.1 Soil Organic Matter (SOM) Buildup 197
9.6.2 Microbial Diversity and Ecosystem Services 198
9.6.3 Soil Structure and Aggregation 198
9.6.4 Nutrient Cycling and Enzyme Activity 199
9.6.5 Carbon Sequestration and Climate Benefits 199
9.6.6 Long- Term Sustainability Perspective 200
9.7 Challenges in Fertilizer Synergy 201
9.7.1 Compatibility Issues Between Inputs 201
9.7.2 Soil- Climate Variability 201
9.7.3 Environmental Trade- Offs and Unintended Impacts 201
9.7.4 Knowledge and Adoption Gaps 202
9.8 Policy and Economic Considerations for Fertilizer Synergy Adoption 202
9.8.1 Cost- Benefit Analysis for Farmers 202
9.8.2 Incentives and Subsidies for Sustainable Inputs 205
9.8.3 Regulatory Challenges and Standards 205
9.9 Conclusion and Future Perspectives 205
References 206
10 Economic Impacts: How Next-Gen Fertilizers Can Transform Global Agriculture 217
Tauqeer Ahmed Qadri, Amjid Khan, Rashid Abbas Khan, Shabbar Abbas, Abdul Wahab, Muhammad Rizwan Khan, and Muhammad Anas
10.1 Introduction 217
10.1.1 From Conventional to Cutting- Edge: Why Fertilizers Matter 217
10.1.2 Economic Challenges of Traditional Inputs 218
10.1.3 Next- Gen Fertilizers as Catalysts for Agricultural Transformation 218
10.1.4 Aims and Scope of the Chapter 219
10.2 The Current Economic Landscape of Fertilizer Use 219
10.2.1 Global Market Dynamics 219
10.2.2 Economic Pressure on Farmers 221
10.2.3 Volatility and Trade Dependence 221
10.2.4 The Hidden Bill: Environmental Liabilities 222
10.3 Fertilizer Efficiency as an Economic Game Changer 222
10.3.1 Nutrient Use Efficiency: Getting More from Less 222
10.3.2 Smart- Release and Nano- formulations: Precision in Practice 223
10.3.3 Economic Returns on Reduced Inputs 223
10.3.4 Case Studies: Yield- Cost Ratios in Major Crops 223
10.4 Environmental- Economic Nexus: Sustainability Pays 224
10.4.1 Environmental Damage as an Economic Loss 224
10.4.2 Green Fertilizers and Climate- Smart Solutions 224
10.4.3 Valuing Ecosystem Services: Cleaner Water, Healthier Soil 225
10.4.4 Carbon Credits and the Bio- circular Economy 225
10.4.5 Sustainability as a Payoff 226
10.5 Fertilizers as Drivers of Food Security 226
10.5.1 Feeding Billions Through Efficiency 226
10.5.2 Economic and Demographic Multipliers 226
10.6 Next- Gen Fertilizers in Precision Agriculture 227
10.6.1 Smart Farming Meets Smart Fertilizers 227
10.6.2 Digital Tools: Drones, IoT, and Sensor- Based Nutrient Delivery 228
10.6.3 Economic Efficiency of Real- Time Nutrient Management 228
10.6.4 Synergistic Gains: AI, Data, and Smart Inputs 228
10.7 Smallholder vs. Large- Scale Farming 229
10.7.1 Bridging Gaps for Smallholders: Access, Affordability, and Resilience 229
10.7.2 Scale Advantages: Efficiency, Profitability, and Global Trade 230
10.8 Policy, Governance, and Economic Incentives 230
10.8.1 Subsidies and Incentives: Making Innovation Affordable 230
10.8.2 Comparative Models: China, EU, USA, and Africa 231
10.8.3 Public- Private Partnerships in Fertilizer Innovation 231
10.8.4 Risks of Policy Gaps: Falling Behind in Competitiveness 232
10.9 Fertilizers and the UN Sustainable Development Goals (SDGs) 232
10.9.1 SDG 2: Zero Hunger Through Better Yields 232
10.9.2 SDG 8: Rural Livelihoods and Economic Growth 234
10.9.3 SDGs 12: Efficiency, Waste Reduction, and Smart Inputs 234
10.9.4 SDGs 13 and 15: Climate Action and Healthy Ecosystems 234
10.10 Conclusion and Future Perspectives 235
References 236
11 Enhancing Crop Nutritional Quality and Functionality Through Next- Generation Fertilizer Technologies 245
Salma Hameed, Muhammad Saqlain, Iqra Ghafoor, Sobia Riaz, Tehmeena Mukhtar, and Rahib Hussain
11.1 Introduction- The Link Between Fertilizers and Crop Nutritional Quality 245
11.1.1 The Contemporary Agricultural Paradigm: Yield vs. Nutritional Quality 245
11.1.1.1 The Dual Challenge in Modern Agriculture 245
11.1.2 Global Food Security Implications 246
11.1.3 Mechanistic Foundations of Fertilizer- Nutrition Interactions 246
11.1.3.1 Macronutrient Pathways and Nutritional Enhancement 246
11.1.4 Micronutrient Dynamics and Crop Quality 247
11.1.5 Contemporary Fertilization Strategies and Innovations 248
11.1.5.1 Novel Fertilizer Technologies 248
11.1.6 Integrated Fertilization Approaches 248
11.1.7 Precision Agriculture and Nutrient Management 249
11.1.8 Silicon- Enhanced Sustainable Crop Production 249
11.1.9 Research Gaps and Future Directions 250
11.2 The Science of Crop Nutritional Quality 250
11.2.1 Background 250
11.2.2 Fundamental Principles of Crop Nutritional Enhancement 250
11.2.2.1 Bioavailability and Nutrient Density Optimization 250
11.2.3 Genetic and Environmental Determinants 251
11.2.4 Contemporary Approaches to Nutritional Enhancement 252
11.2.4.1 Biofortification Strategies 252
11.2.5 Advanced Genetic Technologies 252
11.2.6 Mechanisms of Nutrient Accumulation 253
11.2.6.1 Metabolic Pathway Engineering 253
11.2.7 Nutrient Transport and Storage Optimization 253
11.3 Next- Generation Fertilizers: Innovations for Enhancing Crop Nutritional Profiles 253
11.3.1 Enhanced- Efficiency Fertilizers: The Foundation of Modern Nutrient Management 253
11.3.2 Bionanofertilizers: Merging Biotechnology with Nanotechnology 254
11.3.3 Controlled- Release Fertilizer Technologies 254
11.3.4 Smart Fertilizer Systems and Precision Agriculture Integration 255
11.3.5 Agronomic Biofortification Through Advanced Fertilization 255
11.3.6 Sustainable Nitrogen Management Technologies 255
11.4 Fertilizer- Induced Modulation of Crop Functionality 256
11.4.1 Physiological Mechanisms of Nutrient- Crop Interactions 256
11.4.2 Molecular Responses to Fertilizer Application 256
11.4.3 Fertilizer Effects on Crop Growth Coordination 257
11.4.4 Integrated Approaches for Enhanced Crop Functionality 257
11.5 Nutrient Biofortification: Fertilizers for Addressing Micronutrient Deficiencies 258
11.5.1 The Hidden Hunger Crisis and Fertilizer Solutions 258
11.5.2 Strategic Implementation and Measurable Outcomes 258
11.6 Nutrient Management Strategies for Improving Crop Quality 259
11.6.1 Precision Agriculture and Quality- Focused Nutrition 259
11.6.2 Integrated Systems and Site- Specific Management 259
11.7 Impact of Fertilizer on Plant Secondary Metabolites 260
11.7.1 Bioactive Compounds and Nutritional Enhancement 260
11.7.2 Macronutrient Effects on Metabolite Biosynthesis 260
11.7.3 Micronutrient Catalysis and Targeted Enhancement 261
11.8 Precision Fertilization: Tailoring Nutrient Supply for Optimal Quality 261
11.8.1 Introduction to Precision Fertilization 261
11.8.2 The 4R Principle in Precision Fertilization 262
11.8.3 Variable Rate Technology (VRT) Applications 263
11.8.4 Data- Driven Nutrient Management 263
11.8.5 Environmental and Economic Benefits 264
11.9 Environmental and Health Impacts of Fertilizer- Induced Quality Enhancements 264
11.9.1 Environmental Degradation and Ecosystem Disruption 264
11.9.2 Climate Change and Greenhouse Gas Emissions 265
11.9.3 Water Quality Deterioration and Contamination 266
11.9.4 Human Health Implications 266
11.10 Future Directions: Advancing Fertilizer Technologies for Nutritional Quality Enhancement 266
11.10.1 Enhances Controlled Release Formulations 267
11.10.2 Integration of Nanotechnology and Bio- based Inputs 267
11.10.3 Synergy Between Nanotechnology and Controlled- Release System 267
11.10.4 Coupling Fertilizer Innovation with Precision Agriculture 268
11.10.5 Soil- Health- Compatible Nanocarriers 268
11.11 Conclusion: Fertilizers as Key Drivers of Agricultural and Nutritional Transformation 269
11.11.1 Conclusion 270
References 270
12 Regulatory Frameworks and Policy Implications for Next- Generation Fertilizers 275
Muhammad Anas, Aliza Falak, Waseem Ahmed Khattak, Sudenaz Soylu, Javed Iqbal, and Banzeer Ahsan Abbasi
12.1 Introduction 275
12.1.1 Overview of Fertilizer Regulation 275
12.1.2 Importance of Policy in Sustainable Fertilizer Use 276
12.1.3 Emerging Needs in the Context of Next- Generation Fertilizers 277
12.2 Global Regulatory Landscape 278
12.2.1 Developed vs. Developing Country Frameworks 278
12.2.2 Harmonization of Standards 279
12.2.3 Trade Regulations and Export/Import Policies 280
12.3 National Fertilizer Acts and Standards 281
12.3.1 India: Fertilizer Control Order (FCO) 281
12.3.2 USA: EPA and USDA Guidelines 282
12.3.3 EU: Fertilizing Products Regulation (FPR) 282
12.3.4 China: Ministry of Agriculture and Rural Affairs (MARA) 283
12.3.5 Africa: Regional and National Fertilizer Acts 284
12.4 Certification and Labeling of Next- Generation Fertilizers 284
12.4.1 Requirements for Slow/Controlled- Release Products 284
12.4.2 Guidelines for Nanofertilizers and Biofertilizers 285
12.4.3 Environmental Safety Labeling 286
12.5 Risk Assessment and Regulatory Testing Protocols 286
12.5.1 Ecotoxicology Standards 286
12.5.2 Soil and Water Impact Testing 287
12.5.3 Regulatory Data Requirements for Approval 288
12.6 Future Directions and Policy Recommendations 288
12.6.1 Adaptive Regulatory Models for Innovation 289
12.6.2 Integrating Circular Economy Principles 289
12.6.3 Regional Collaboration and Capacity Building 290
12.7 Conclusion 290
References 291
13 Optimizing Next- Generation Fertilizer Use Through Integrated Green Manure and Reduction Strategies for Sustainable Agriculture 297
Tauqeer Ahmed Qadri, Muhammad Rizwan Khan, Muhammad Anas, Amjid Khan, Waseem Ahmed Khattak, Shabbar Abbas, Javed Iqbal, and Banzeer Ahsan Abbasi
13.1 Introduction 297
13.1.1 Background and Significance 297
13.1.2 Emergence of Sustainable Agriculture 298
13.1.3 Importance of Next- Generation Fertilizer Strategies 298
13.1.4 Green Manure: Concept, Types, and Agroecological Functions 299
13.2 Classification of Green Manures 299
13.2.1 Leguminous vs. Nonleguminous Species 299
13.2.2 Indigenous vs. Improved Cultivars 300
13.2.3 Mechanisms of Soil Enrichment 300
13.2.4 Nitrogen Fixation 300
13.2.5 Organic Matter Incorporation 300
13.2.6 Weed Suppression 300
13.3 Impacts on Soil Physical, Chemical, and Biological Properties 301
13.3.1 Physical Properties 301
13.3.2 Chemical Properties 301
13.3.3 Biological Properties 301
13.4 Next- Generation Fertilizers: Innovations and Efficacy 301
13.4.1 Types and Technologies 301
13.4.2 Controlled- /Slow- Release Fertilizers (CRFs/SRFs) 301
13.4.3 Nanofertilizers 302
13.4.4 Polymer- Coated Fertilizers 302
13.5 Role in Enhancing Nutrient Use Efficiency (NUE) 302
13.5.1 Environmental Footprint and Lifecycle Assessment 302
13.6 Challenges in Adoption and Cost- Benefit Analysis 305
13.6.1 Production Costs 305
13.6.2 Raw Material Availability 305
13.6.3 Market Competition 305
13.6.4 Adoption Rates 305
13.6.5 Cost- Benefit Analysis 305
13.7 Integrated Strategies: Green Manure and Fertilizer Reduction Synergies 306
13.7.1 Scientific Rationale and Agronomic Basis 306
13.7.2 Yield and Quality Enhancement in Major Crops 306
13.7.3 Fertilizer Input Reduction Without Yield Penalty 307
13.7.4 Soil Health and Carbon Sequestration Benefits 308
13.8 Microbial and Biogeochemical Interactions in Green Manure Systems 308
13.8.1 Green Manure Influence on Soil Microbial Diversity 308
13.8.2 Nutrient Cycling and Rhizosphere Dynamics 308
13.8.3 Role of Mycorrhizae and PGPR in Enhancing Fertilizer Efficiency 308
13.8.4 Green Manure and Microbial Carbon/Nitrogen Pathways 309
13.9 Climate Resilience and Environmental Sustainability Through Green Manure Integration 309
13.9.1 Mitigation of Greenhouse Gas Emissions 309
13.9.2 Resilience to Abiotic Stresses 309
13.9.3 Contribution to Sustainable Development Goals (SDGs) 310
13.10 Economic and Policy Considerations in Green Manure Integration 310
13.10.1 Cost- Benefit Analysis of Integrated Practices 310
13.10.2 Input Savings and Yield Gains 310
13.10.3 Long- Term Soil Productivity 311
13.10.4 Incentives and Subsidy Models 311
13.10.5 India 311
13.10.6 China 311
13.10.7 Sub- Saharan Africa 311
13.11 Role of Extension Services and Farmer Training 311
13.11.1 Farmer- to- Farmer Extension 311
13.11.2 Institutional Support 312
13.11.3 Policy Recommendations for Global Adoption 312
13.12 Knowledge Gaps and Research Frontiers in Green Manure Integration 312
13.12.1 Long- Term Field Studies and Meta- analysis Needs 312
13.12.2 Standardizing Metrics for Soil and Crop Response 312
13.12.3 Integration with Precision Agriculture and Remote Sensing 313
13.12.4 Potential of Genetically Enhanced Green Manure Species 313
13.13 Conclusion 313
References 314
Index 321
