Fundamentals of soil science
This major revision of a bestselling text shows that soil is three-dimensional and dynamic. This concept is developed in the first two chapters and is built on throughout the book. Chapters 3 through 7 explore soil physical properties and water, with expanded coverage of tillage and traffic and an increased emphasis on water and wind erosion processes. Chapters 8 through 11 discuss the biological aspects of soils as well as their mineralogical and chemical properties. In Chapters 12 through 15, the general area of soil fertility and fertilizer use is covered. Other chapters examine soil genesis, taxonomy, geography, land use and soil survey, and land use interpretations. Finally in chapter 20, the importance of nonagronomic factors in the food population problem are discussed. Both English and metric units are used for crop yields, new figures and tables are included, summary statements are given at the end of the more difficult sections and at the end of each chapter, and non-agricultural examples and several computer applications are provided for reference.
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Concepts of Soil
Soil as a Natural Resource
Utilization of the Soil by Plants
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absorbed accumulation acid acre aggregates agricultural Alfisols aluminum ammonium amount animals areas argillic horizons Aridisols bacteria base saturation bulk density calcium capacity carbon cation-exchange cations centimeters clay colloidal color corn crops cultivation decomposed decomposition deficiency drainage effect Entisols epipedon exchangeable factors fertilizer forest grams Histosols humid humus important Inceptisols inches increase ions iron irrigation kaolinite land layer leaching legumes lime loam magnesium manure mineral soil Mollisols montmorillonite nitrate nitrogen nitrogen fixation nutrients occurs organic matter content oxide Oxisols oxygen parent material percent percentage phosphate phosphorus plant growth pore space potassium pounds produced properties regions result rock roots salt sand sandy shown in Fig silt sloping sodium soil development soil horizon soil particles soil pH soil solution Soil Survey soil temperature SOIL WATER soluble Spodosols suborder sulfur texture tillage tion Ultisols United uptake USDA soil taxonomy vegetation Vertisols weathering wheat yields