Advances in Agronomy, Volume 138

Chapter One: Root Iron Plaque on Wetland Plants as a Dynamic Pool of Nutrients and Contaminants

• Abstract
• 1. Introduction
• 2. Wetlands and Hydrophytes
• 3. Formation and Characteristics of Iron Plaque
• 4. Root Plaque as a Source and Sink for Plant Nutrients and Contaminants
• 5. Future Research
• 6. Summary
• 7. Conclusions
• Acknowledgements

Chapter Two: Utilization of Biowaste for Mine Spoil Rehabilitation

• Abstract
• List of abbreviations
• 1. Introduction
• 2. Sources of Biowaste
• 3. Regulations of Biowaste Utilization
• 4. Effects of Biowaste Addition on Mine Spoils
• 5. Case Studies of Biowaste Utilization
• 6. Efficacy of Biowastes on Mine Spoil Rehabilitation
• 7. Conclusions and Future Research Needs
• Acknowledgments

Chapter Three: Exposure, Toxicity, Health Impacts, and Bioavailability of Heavy Metal Mixtures

• Abstract
• 1. Introduction
• 2. Impacts of Heavy Metals on Human Health and Metal–Metal Interactions
• 3. Impacts on Ecosystem Health
• 4. Regulatory Limits for Heavy Metals
• 5. Bioassay Tests
• 6. Metal–Metal Interactions in Soil
• 7. Effect of Soil Properties on Metal Bioavailability
• 8. Conclusions
• Acknowledgments

Chapter Four: Integrated Farming Systems and the Livelihood Security of Small and Marginal Farmers in India and Other Developing Countries

• Abstract
• 1. Introduction
• 2. Background
• 3. Concepts of Farming Systems
• 4. Determinants of Farming Systems
• 5. Major Components of IFS in India and Other South Asian Countries
• 6. Conclusions

Advances in Agronomy continues to be recognized as a leading reference and first-rate source for the latest research in agronomy. Each volume contains an eclectic group of reviews by leading scientists throughout the world. As always, the subjects covered are rich, varied, and exemplary of the abundant subject matter addressed by this long-running serial.

• Includes numerous, timely, state-of-the-art reviews
• Features distinguished, well recognized authors from around the world
• Builds upon this venerable and iconic review series
• Covers the extensive variety and breadth of subject matter in crop and soil sciences

scientists and practitioners in academe, government, and industry and students in an array of fields including crop and soil sciences, agronomy, plant biology, and environmental sciences. The readership spans the globe.