Alluvial soil is found in the entire northern plain. It is the most widely spread soil of India. Main features of alluvial soil:
(i) It is formed by the deposition of materials brought down by the Himalayan rivers.
(ii) It is highly fertile.
(iii) It consists of various proportions of sand, silt and clay.
(iv) It is rich in potash, phosphoric acid and lime but deficient in organic matter.
