Advances in Soil Science
The world needs for food and fiber continue to increase. Population growth in the developing countries peaked at 2. 4 percent a year in 1965 and has fallen to about 2. I percent. However, in many developing countries almost half the people are under 15 years of age, poised to enter their productive...
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| Format: | eBook |
| Language: | English |
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New York, NY
Springer New York
1987, 1987
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| Edition: | 1st ed. 1987 |
| Series: | Advances in Soil Science
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| Subjects: | |
| Online Access: | |
| Collection: | Springer Book Archives -2004 - Collection details see MPG.ReNa |
Table of Contents:
- Potassium Dynamics in Soils
- I. Introduction
- II. General Characteristics of Soil K
- III. Forms of Soil Potassium
- IV. Inorganic and Organic Colloids Important in Potassium Dynamics
- V. Techniques for Measuring Potassium Dynamics
- VI. Equations and Models to Describe Potassium Dynamics in Soils and Clay Minerals
- VII. Effect of Temperature on K Dynamics
- VIII. Dynamics Between Solution and Exchangeable Phases of Potassium
- IX. Kinetics of Nonexchangeable and Mineral Potassium Release
- X. Use of Kinetics for Determining Thermodynamics of Potassium Exchange in Soils
- XI. Summary and Future Research Needs
- References
- Models to Assess the Susceptibility of Soils to Excessive Compaction
- I. Introduction
- II. Definitions
- III. Modeling Laboratory Soil Compaction
- IV. Ease/Susceptibility of Soils to Compaction
- V. Excessive Compaction
- VI. Water Contents and Applied Stresses Not Conducive to Excessive Compaction
- II. General Considerations of Trace Element Problems in Plants and Animals
- III. Geographical Distribution of Nutritional Problem Areas for Grazing Animals
- IV. General Discussion
- V. Future Outlook
- References
- VII. Acceptable Loads Versus Drainage
- VIII. Modeling Field Soil Compaction
- IX. Application of Field Soil Compaction Models
- X. Areas of Future Research
- References
- Sources, Amounts, and Forms of Alkali Elements in Soils
- I. Introduction
- II. Differentiating Characteristics
- III. Geochemistry
- IV. Mineralogy
- V. Soil Content
- VI. Soil Forms
- References
- The Diagnosis and Recommendation Integrated System (DRIS)
- I. Introduction
- II. Nutrient Concentration and Aging
- III. DRIS Norms
- IV. Making a Diagnosis: Use of a DRIS Chart
- V. Calculating DRIS Indices
- VI. Nutrient Index Interpretation
- VII. Testing DRIS Norms
- VIII. Comparisons of DRIS and Other Diagnostic Systems
- IX. Effect of Leaf Age and Position on DRIS Indices
- X. Universality of Foliar Norms
- XI. Expansion of DRIS Beyond Nutrient Ratios
- XII. Conclusions
- XIII. References
- Soil-Related Nutritional Problem Areas for Grazing Animals
- I. Introduction