Soils in Our Environment

1. Soil Composition and Importance. 2. Soil Physical Properties. 3. Soil Water Properties. 4. Soil Chemical Properties. 5. Organisms and Their Residues. 6. Soil Formation and Morphology. 7. Soil Taxonomy. 8. Acidic Soils. 9. Salt-Affected Soils. 10. Plant Nutrients: Nitrogen, Phosphorus, and Potassium. 11. Calcium, Magnesium, Sulfur, and Micronutrients. 12. Soil Fertility Management. 13. Tillage Systems and Alternatives. 14. Soil Erosion. 15. Water Resources and Irrigation. 16. Wetlands and Land Drainage. 17. Pollution of Soil, Water, and Air. 18. Toward Environmental Integrity. 19. Soil Surveys and Land-Use Planning. 20. Greenhouse Soils and Soilless Culture.