Advances in Soil Science

Assessing and Managing Agricultural Nitrogen Losses to the Environment. - I. Introduction. - II. Contributions to N Input. - III. N Loss Processes. - IV. Practices to Ameliorate N Losses or Increase N Use Efficiency. - V. N Research Tools. - VI. Research Needs. - References. - Assessing and Modifying Ca and Al Levels in Acid Subsoils. - I. Introduction. - II. Soil Al and Plant Response. - III. Ca Deficiency and the Ca/Al Relationship. - IV. Ca and Al in Acid Subsoils. - V. Conclusions. - References. - Application of Electron Spin Resonance (ESR) Spectroscopy in Soil Chemistry. - I. Introduction. - H. Basic Principles and Methodology of ESR Spectroscopy. - III. Organic Free Radicals in Humic Substances. - IV. Free Radicals in Humic Substance-Herbicide Interactions. - V. Metal-Humic Substance Complexes. - VI. Metal and/or Organic Interactions with Oxides Hydrous Oxides and Clay Minerals. - VII Summary and Conclusions. - VIII. Recommendations for Future Work. - References. - Microelectrophoresis Applied to the Surface Chemistry of Clay Minerals. - I. Introduction. - II. Quantitative Applications. - III. Qualitative Applications. - IV. Conclusions. - References. - Applications of Luminescence Spectroscopy to Studies of Colloid-Solution Interfaces. - I. Introduction. - II. Fundamental Principles. - III. Applications of Fluorescence to Colloidal Systems. - IV. Conclusions. - References. Language: English