Black soil is also called as regur soil or black cotton soil.
It is the third major group of soil in India and forms the top part of the earth’s surface, that includes disintegrated rock, humus, inorganic, and organic materials
The soil is in black colour and is formed by the weathering of igneous rock.
It is majorly found in Gujarat, Maharashtra, Western parts of Madhya Pradesh, North- Western Andhra Pradesh, Karnataka, Tamil Nadu, Rajasthan, Chhattisgarh.
The soil is rich in minerals like Iron, lime, calcium, potash, magnesium and aluminium.
It has high water retaining capacity and is clayey in texture.
Crops like cotton, tobacco, sugarcane, jowar etc. can be grown on black soil.
Final answer: Black soil is also known as regur soil or black cotton soil.