They are spread over 26% area in Telangana. Black soils have higher water retention capacity.
Black soils are formed due to weathering in the areas of sedimentary rocks, metamorphic rocks, limestone and shells.
They are black or dark gray in color due to the presence of Magpeşlum oxide.
The rocks spread in black soils- Basalt, Granite.
These soils are formed on lava, gneiss and granite rocks located in the Deccan plateau having a semi semi-arid climate.
Black soils have a high amount of clay and higher moisture retention capacity.
They are also known as Regur sóils or Black Cotton soils. Black soils have higher content of Iron and Calcium and lesser content of Phosphorus, Nitrogen and organic material.
They are mainly spread over the districts of Adilabad, Mancherial, Nirmal, Rangareddy, Nizamabad and Kamareddy and less spread in the districts of Karimnagar, Waranagal and Mahabubnagar.
Black soils are best for the cultivation of cotton, tobacco, turmeric, chili and Millet, crops. The PH of black soils ranges from 7.8 to 8.7.