|Formation of Soils
|Type of Soil
|By silt deposition brought by rivers.
|By weathering of lava deposits on the Deccan Plateau.
|Red and Yellow Soil
|By weathering old crystalline or metamorphic rocks.
|Due to leaching by heavy rains and destruction of humus by bacteria.
|By weathering of rocks in dry conditions.
|By salt deposition by tides, rivers or sea breeze.
|Due to accumulation of larges amounts of organic matter in the soil.