SOIL FERTILITY -- SOIL FERTILITY -- Contents -- Preface -- Effects of Organic Residue Chemistry on Soil Biogeochemistry: Implications for Organic Matter Management in Agroecosystems -- Abstract -- 1. Introduction -- 2. Materials and Methods -- 2.1. Soil Characterization -- 2.2. Plant Residue Characterization -- 2.3. Incubation Experiment -- 2.4. Soil Carbon and Nitrogen Mineralization -- 2.5. Soil Microbial Biomass -- 2.6. Enzyme Assays -- 2.7. Statistical Analysis -- 3. Results -- 3.1. Organic Residue Chemistry -- 3.2. Soil Nitrogen Mineralization -- 3.3. Soil Carbon Mineralization and Microbial Respiration -- 3.4. Soil Microbial Biomass and Metabolic Quotient -- 3.5. Soil Enzyme Activities -- 3.6. Relationship between Soil Parameters -- 3.7. Relationship between Organic Residue Chemistry and Soil Parameters -- 4. Discussion and Conclusion -- Acknowledgment -- References -- Agricultural Management Changes in Pampean Soils Related to Rotation and Tillage: Impacts on Soil Organic Reservoirs -- Abstract -- Description of the Region and Its Cropping History -- Cultivation Effects on Soil Carbon Reservoirs -- Soil Carbon Balance in Cultivated Soils -- Impact of Soybean Introduction in Rotations on Soil Nitrogen Budget -- References -- Fertility and Soil Management in Agroforestry Systems in the Eastern Amazon -- Abstract -- Introduction -- Materials and Methods -- Results and Discussion -- Conclusion -- References -- Maintaining Soil Fertility under Energy Crop Production Systems -- Abstract -- 1. Need for Biofuel Feedstock Nutrient Management -- 2. Nutrient Removal by Biofuel Feedstock -- 3. Nutrient Content of Harvested Crop Residue in United States -- 4. Developing Nutrient Recommendation for Feedstock -- 5. Managing the Nutrient Removal in Feedstock -- 6. Future Research -- References.

Evaluation of the Potassium Supplying Abilities of Three Animal Manures: An Incubation Study -- Abstract -- Introduction -- Methodology -- Soil and Manure Analyses -- Laboratory Incubation -- Calculations -- Statistical Analysis -- Results -- Soil Characteristics -- Manure Characteristics -- Net Mineralization/Immobilization of Potassium -- Conclusion -- References -- Soil Fertility and Nitrogen Fertilization in the Modern Sustainable Farming Systems of Moldova( -- Abstract -- Introduction -- Methods and Conditions -- Results and Discussions -- Conclusion -- Acknowledgments -- References -- Soil Fertility Enhancing Microorganisms and Their Application as Biofertilizers( -- 1 Chemistry and Life Sciences College, Tianjin Normal University, Tianjin, PR China -- 2 Department of Biology, University of Western Ontario, London, Ontariio, CA -- Abstract -- 1. Introduction -- 2. Nitrogen-Fixing Bacteria and Their Application as Biofertilizers -- 2.1. Symbiotic Nitrogen Fixers -- 2.2. Non-Symbiotic Nitrogen Fixers -- 2.3. Application of Nitrogen Fixing Bacteria as Biofertilizer -- 3. Phosphate Solubilizing Bacteria -- 3.1. Application of P Solubilizing Bacteria as Biofertilizer -- Conclusion -- Acknowledgments -- References -- Index.