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Basic Considerations | |
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The Tropical Environment | |
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Climate and vegetation | |
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Agro-climatic zones | |
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Farming systems | |
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Historical lessons | |
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Summary | |
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Mineralogy | |
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Rocks and minerals | |
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Primary minerals | |
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Secondary minerals | |
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Summary | |
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Soil Chemistry | |
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Surface and charge properties of soil colloids | |
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Retention of ions on colloid surfaces | |
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Soil acidity and toxicity | |
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Alkalinity, salinity, and sodicity | |
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Summary | |
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Soil Physics | |
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Soil texture | |
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Soil structure and soil aggregation | |
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Bulk density, porosity, and pore-size distribution | |
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Soil-water retention characteristics | |
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Infiltration and permeability | |
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Water movement | |
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Soil solution | |
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Solute movement | |
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Soil aeration | |
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Soil temperature | |
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Summary | |
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Soil Biology and Microbiology | |
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Soil microflora | |
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Soil fauna | |
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Summary | |
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Soil Fertility | |
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Soil chemical fertility | |
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Soil physical fertility | |
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Soil biological fertility | |
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Summary | |
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Soil Formation and Classification | |
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Soil formation | |
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Pedological classification of soils | |
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Technical soil classification schemes | |
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Summary | |
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Major Arable Soils of the Tropics: A Descriptive Grouping Based on Clay Mineralogy | |
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Kaolinitic soils | |
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Oxidic soils | |
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Allophanic soils | |
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Smectitic soils | |
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Production potential and limitations | |
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Summary | |
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Properties and Management | |
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Soil Management: An Overview | |
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Tillage and seedbed preparation | |
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Replenishing soil nutrients | |
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Soil moisture management | |
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Maintenance of soil organic matter | |
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Landscape approach to soil and water management | |
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Summary | |
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Properties and Management of Kaolinitic Soils | |
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Properties and use of kaolinitic soils | |
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Traditional and modern land-use systems | |
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Soil physical constraints and management | |
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Soil chemical constraints and management | |
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Summary | |
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Properties and Management of Oxidic Soils | |
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High-base-status and low-base-status oxidic soils | |
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Physical and chemical properties | |
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Use and management | |
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Soil erosion | |
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Effect of continuous cultivation on soil properties | |
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Alternative land-use systems | |
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Summary | |
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Properties and Management of Smectitic Soils | |
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Properties of smectitic soils | |
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Use and management of smectitic soils in wetter regions | |
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Use of acid sulfate soils | |
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Use and management of smectitic soils in drier regions | |
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Summary | |
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Properties and Management of Allophanic Soils | |
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Properties of allophanic soils | |
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Use and management of allophanic soils | |
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Summary | |
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Soils and Sustainable Agriculture: Ecological Considerations | |
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The ecosystem concept | |
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Agroecosystems | |
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Summary | |
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Physical and Chemical Properties of Selected Soil Profiles | |
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References | |
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Index | |