The black soils (regur) are found primarily in the lava area of Deccan covering large parts of Maharashtra, parts of Gujarat and Madhya Pradesh, and small parts of Karnataka, Andhra
The soils are formed by the disintegration of volcanic basaltic lava.
The color of the soil is generally black due to the presence of compounds of aluminum and iron.
Locally known as the regur, the soil extends collectively to 64 million hectares.
It is usually deep clayey and it has poor permeability and impregnability.
But it’s depth varies from place to place.
In the lowlands, it is very dense but in highlands, it is very thin.
The most important characteristics of this soil are its ability to maintain moisture even during the dry season.
In the summer, the soils form large cracks due to loss of moisture and become sticky when saturated.
Then the soil is aerated and oxidized to deep levels that help preserve its fertility.
This continued fertility is favorable in the area of low rainfall for cotton cultivation even without irrigation.
Other than cotton, this soil is advantageous for growing crops such as sugarcane, wheat, onion, and fruits.
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