Fundamentals of soil science
A revised, comprehensive, introductory text covering soil science. Designed for undergraduates majoring in agriculture. Provides a balance between principles and practice, integrating all environmental topics. Covers temperate versus tropical and humid versus arid regions. Includes many photos of Asian and Canadian soils and agronomic practice. Examines tropical and northern soils, acidity in soils, and soil formation.
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Soil as a Medium for Plant Growth
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absorbed accumulation acre agricultural Alfisols aluminum amount animals areas argillic horizon Aridisols bacteria base saturation bulk density calcium carbon cation exchange capacity centimeters clay color corn creases crops decomposition decreases deficiency drainage effect Entisols epipedon erosion factors fertilizer Figure fixation forest gibbsite grams Histosols humid humus Inceptisols increase ions iron irrigation kaolinite kilograms land layer leaching lime loam loss magnesium manure matric potential meters Mollisols nitrate nitrogen nitrogen fixation nutrients occur organic matter content oxide Oxisols oxygen parent material peds percent phosphate phosphorus plant growth plow pore space potassium pounds production reduced regions result roots salinity salt sand sandy shown in Fig silt sloping sodium soil development soil horizon soil particles soil pH Soil Sci soil solution soil surface soil temperature soil water soluble Spodosols sulfur Table texture tillage tion trients ture Ultisols United uptake USDA vegetation Vertisols weathering wheat yields