Black Soils:
- These are also known as the ‘black cotton soils’ or ‘Regur’ soils. These soils ae
famous for the cultivation of cotton. - The expansion of these soils is mainly in Maharashtra, southeastern Gujarat,
western Madhya Pradesh, north-western Tamil Nadu and south-eastern Rajasthan. - These soils have been formed by the disintegration of lava. The reason of their
being black is the presence of titaniferrous magnetite compounds of iron and
aluminium etc. - These soils are very fertile and have more water storage capacity. The moisture
remains in their lower layer even after the upper layer of these soils gets dried up.
When they contain moisture, they become sticky. When they get dried up they
shrink and so, long and deep cracks develop in them. - These soils contain high quantities of iron, aluminium, magnesium and lime.
However, they are poor in nitrogen, phosphorus and organic matter. - These soils are zonal.