Fundamentals of Soil ScienceConcepts of soil. Soil as a medium for plant growth. Physical properties of soils. Soil moisture. Chemical and mineralogical properties of soils. Soil reaction. Lime and its use. Soil organisms - kinds, numbers, activities, and relation to soil productivity. Soil organic matter. Origin and classification of soils. Great soil groups. Nutrient requirement and mineral nutrition of plants. Fertilizers and fertilizer materials. Fertilizer practices. Farm manures. Soil erosion and its control. Soils and agriculture of arid regions. Irrigation. Soil resources. |
Contents
Concepts of Soil | 1 |
Soil as an evolutionary body | 7 |
Soil As a Medium for Plant Growth | 15 |
Copyright | |
47 other sections not shown
Common terms and phrases
absorb accumulation acid acreage acres Agriculture alfalfa alkali soils ammonia amount animals applied areas bacteria Brown calcium calcium carbonate capacity carbonate cations cent chemical Chernozem clay climate colloidal color compounds corn crop land cultivation decomposition deficiency deposits depth drainage effect elements erosion factors farm fertilizer grass group of soils gullies horizon humid humus illuvial inches increase ions irrigation kaolinite layer leaching legumes lime loam loss magnesium manure micro-organisms mineral moisture montmorillonite nitrate nitrogen occur organic matter organic-matter oxide parent material percentage phosphate phosphoric acid phosphorus Planosols plant growth plant nutrients plow Podzolic potash potassium pounds precipitation quantities rainfall regions result rock roots saline sand sandy silt slope sodium soil development soil horizon soil organisms soil particles soil surface soluble soluble salts structure sulfate sulfur superphosphate supply surface soil Table temperature texture tion United usually vegetation weathering zonal