(a) Formed by the weathering of crystalline rocks.
(b) Found in Tamil Nadu, Karnataka, Goa and Orissa.
(c) Main characteristics are:
(i) Red in color due to presence of iron compounds.
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(ii) Colour varies from chocolate brown to yellow.
(iii) Deficient in nitrogen, lime, phosphoric acid and humus.
(iv) The soil becomes productive with the use of fertilisers.
(d) Crops grown are: Rice, sugar cane, wheat, pulses can be grown with irrigation and addition of fertilisers.