Contents About the Editors Contributors , Preface , Chapter 1. Biology and Chemistry of Nutrient Availability in the Rhizosphere , Introduction , Influence of Rhizodeposition on Microbial Ecology , Plant Modifications of Rhizosphere Chemistry , Plant Responses to Micronutrient Deficiencies , Microbial Interactions Influencing Plant Nutrition , Bioaugmentation of the Rhizosphere , Conclusions , Chapter 2. Kinetics of Nutrient Uptake by Plant Cells , Introduction , Transport Mechanisms , Control of Uptake , Enzyme Kinetics and Membrane Transport , Dual Isotherms and Multiphasic Kinetics , Induction and Repression of Transport Systems , Root Structure and Observed Kinetics , Conclusions , Chapter 3. Molecular Biology of Nutrient Transporters in Plant Membranes , Introduction , Isolation of Ion Transporters , Common Molecular Features of Plant Nutrient Transporters , Potassium Transport , Sulfate Transport , Phosphate Transport , Nitrogen Transport , Tools for Physiological Studies , Implications for Agriculture and the Environment , Chpater 4. Long-Distance Nutrient Transport in Plants and Movement into Developing Grains , Introduction , Long-Distance Transport in Xylem and Phloem , Pathway of Nutrient Transport into Developing Grains , Conclusions , , Chapter 5. The Significance of Root Size for Plant Nutrition in Intensive Horticulture , Introduction , The Role of Root Size and Container Volume in Nutrient Uptake , Plant Response to Container Volume and Nutrient Concentrations , Effect of Container Volume and Nitrate Concentration on Nitrogen and Water Uptake Rates , Tomato Response to Root Treatments in Hydroponics , Internal Regulatio