From a general perspective, “soil” is a very broad term and refers to the loose layer of earth that covers the surface of the planet. The soil is the part of the earth’s surface, which includes disintegrated rock, humus, inorganic and organic materials. For soil to form from rocks, it takes an average of 500 years or more. The soil is usually formed when rocks break up into their constituent parts. When a range of different forces acts on the rocks, they break into smaller parts to form the soil. These forces also include the impact of wind, water, and salts’ reaction.
There are three stages of soil:
Solid soil
Soil with air in the pores
Soil with water in the pores
Various types of soil undergo diverse environmental pressures. Soil is mainly classified by its texture, proportions and different forms of organic and mineral compositions.
Types of soils
Soil is classified into four types:
Sandy soil.
Silt Soil.
Clay Soil.
Loamy Soil.