GEOGRAPHY AND HISTORY

  Soil texture is one of the physical properties of soil along with soil structure, soil color, soil temperature, soil porosity and others. Soil texture can be defined as the coarseness or fineness of the soil determined by relative proportion of soil particles of different diameters. The following is importance of soil texture: It influence other physical soil properties of soil like; soil permeability, soil structure, soil porosity, soil water retention capacity and so forth. Soil texture influence soil resistance to erosion. Erosion is easier to soil which are course textured as their particles are loose. It determine the relative penetration of plant roots in the soil. Where the soil particles are large, roots can penetrate more easily than they do in fine grained soil which are usually compact. Soil texture determine the infiltration rate of water into soil. Infiltration rate is easier in course textured soil compared to fine textured soil as its particles are compacted...

  Soil classification refers to the grouping or organization of soil into classes according to their general characteristics.  Soil are classified into two levels which are local level based on the dominant soil soil formation factors like parent rock, micro climate, vegetation, slope and drainage and global level, based on factors like climate, water and vegetation, which are dominant in the soil profile development.  Their interplay produces varying soil regimes.Lateritization, calcification, podzolization and salinization are the main soil profile forming processes under different climates.   Criteria for soil classification: There are number of factors /criteria used in classifying soils. Some of the criteria used include the following; Climatic variation in which soil can be classified as soil of humid tropics(like laterites) ir soils of cold regions like tundra soils Morphological properties of soil like depth, color, texture, structure, temperature, w...