Black soil is also called Regur soil. It is black in colour and ideal for growing cotton. This type of soil is typical of the Deccan trap (Basalt) region spread over North-West Deccan plateau and is made up of lava flows.
Four characteristics of this soil are as follow (i) It is made up of fine clayey material with a high moisture retention capacity.
(ii) It is rich in soil nutrients like calcium carbonate, magnesium, potash and lime, but poor in phosphoric content.
(iii) It develops deep crack during hot weather, helping in proper aeration of the soil.
(iv) It is found in the plateau areas of Maharashtra, Gujarat, Madhya Pradesh and Chhattisgarh as well as in the Godavari and Krishna valleys.