Soils: Their Properties and Management (Rural Text-Book Series)

xxi, 764 pp. 6 pages of publisher ads follow text. Color fold-out map of soil regions in U.S. CONTENTS: Some General Considerations; Soil-forming Processes; The Geological Classification of Soils; Geological Classification of Soils (Continued); Climatic and Geochemical Relationship of Soils; The Soil Particle; Some Physical Properties of the Soil; The Organic Matter of the Soil; The Colloidal Matter of Soils; Soil Structure; The Forms of Soil Water and Their Movement; The Water of the Soil in Its Relation to Plants; The Control of Soil Moisture; Soil Heat; Availability of Plant Nutrients as Determined by Chemical Analysis; The Absorptive Properties of Soils; Acid or Sour Soils; Alkali Soils; Absorption of Nutritive Salts by Agricultural Plants; Organisms in the Soil; The Nitrogen Cycle; The Soil Air; Commercial Fertilizers; Soil Amendments; Fertilizer Practice; Farm Manures; Green Manures; Land Drainage; Tillage; Irrigation and Dry Farming; The Soil Survey.