Soils of Tamil Nadu
in Tamil Nadu are broadly classified into five types according to their
characteristics. They are 1. alluvial soil, 2. black soil, 3. red soil, 4.
laterite soil, 5. saline soil.
soils are formed by the deposition of silt by the rivers. It is found in the
river valley regions and the coastal plains of Tamil Nadu. Generally this type
of soil is found in the districts of Thanjavur, Tiruvarur, Nagapattinam,
Villupuram, Cuddalore, Tirunelveli and Kanyakumari. It is also found to a small
extent along the river valleys in few interior districts.
soils are formed by the weathering of igneous rocks. It is also known as regur
soil. As cotton grows well in this soil, it is also called as black cotton
soil. Black soils are found extensively in the districts of Coimbatore,
Madurai, Virudhunagar, Tirunelveli and Thoothukudi.
cover over two-thirds of the total area of Tamil Nadu. They are found
particularly in the central districts of the state. It is dominantly found in
Sivagangai and Ramanathapuram districts.
is formed by the process of intense leaching. Laterite soils are found in some
parts of Kancheepuram, Tiruvallur and Thanjavur districts and some patches over
the mountainous region in the Nilgiris.
soils in Tamil Nadu are confined to the Coromandel coast. Vedaranyam has a
pocket of saline soil. However, the tsunami waves on December 26, 2004 brought
a lot of sand and deposited it all along the east coast of Tamil Nadu. The
tsunami made the coastal areas unsuitable for cultivation to a considerable