JAM Classes

  Composition of Soil Soil According to Soil Science Society of America, soil is defined as the unconsolidated mineral or organic matter on the immediate surface of the earth that serve as a natural medium for the growth of land plants. Composition of soil As far as the composition of the soil is concerned it is composed of four basic components: Minerals-           45% Organic matter 5% Water-               20-30 % Air-                   20-30% The amount of these components of the soil depends on the quality of vegetation, soil compaction and water present in the soil. But in reality the composition is very much complex and is dynamic in nature. The above four components are categorized under two headings solid phase and non-solid phase. Solid phase includes mi...