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Soil Characteristics and classification; Why world hunger?; Soil water, drainage, and irrigation; Organic matter, microorganisms, and soil structure; Nitrogen problems and rotations; Fitting crops to the soils; Water conservation and erosion control; Land capability and soil management; Tillage and planting methods; Soil testing; Tissue testing; Plant symptoms of nutrient deficiency; Soil acidity and liming; Plant nutrients and fertilizers; Cropping systems and management practices: the North Central States; Cropping systems and management practices: Southern and western States; Soil management for Gardens, Greenhouses, and Lawns; Shifting cultivation; Multiple-cropping without and with interplanting; Forests, desertification, erosion; Management of arid lands and water management; Organic farming (Histosols).