Residual soils which are found in the narrow Southern plateau region and are red and yellow in colour are known as soils of Southern plateau.
The soils of Southern plateau are divided into two types:
i. Red Sandy Soil of Kaimur Hills
➤ This soil is found in the Kaimur range in the West to Rajmahal Hills in the East and the Northern margin areas of Northern Chota Nagpur plateau.
➤ It is yellowish red in colour and is acidic in nature.
➤ Higher percentage of sand results in lesser fertility of this soil thus, it is suitable only for bajra, jowar, etc crops.
ii. Red and Yellow Soils
➤ These soils have been formed from disintegration of igneous and metamorphic rocks.
➤ Due to presence of iron in the rocks, their colour is red.
➤ They are less fertile and thus suitable for coarse crops and pulses.
➤ This soil is found in the South-Eastern Bihar such as Banka, Nawada, Gaya, Aurangabad, Jamui and Munger (Kharagpur hilly region.)
