Explanation:

Regur Soils are black in colour and are also known as ‘black soils’. Since they are perfect for growing cotton, they are also called cotton soils. These soils are most characteristic of the Deccan trap (Basalt) region, spread over the north-west Deccan plateau and are made up of lava flows. They cover the plateaus of Maharashtra, Saurashtra, Malwa and southern Madhya Pradesh and continue eastwards in the south, along the Godavari River and Krishna River Valleys.

Owing to the high proportion of clay, Regur soils are sticky when wet and consequently becomes difficult to plough. They are well-known for their ability to retain moisture. In addition, they are prosperous in soil nutrients, like calcium carbonate, magnesium carbonate, potash and lime. They are usually poor in phosphoric content. They develop thick fissures in the field during hot weather. This helps in their ventilation; hence their self ploughing eminence. This soil is viscous and unmanageable to work, unless tilled without delay, after the first or pre-monsoon showers.