Question

Distinguish between the Black soil and Alluvial soil.

Answer 1

Sr. No.	Black soil	Alluvial soil
1.	Its formation is by weathering of igneous rocks.	Formed by the deposition of silt by the rivers.
2.	Clayey in nature when wet develop cracks when dry.	Fertile in nature as they are rich in minerals.
3.	Cotton grows well in this soil.	Paddy and sugar cane grow well in this soil.
4.	It is developed over the Deccan lava granite region under semi-arid conditions.	It is found in the river valley regions and the coastal plains.
5.	Found in the districts of Coimbatore, Madurai, Tirunelveli, Virudhunagar.	Found in the districts of Thanjavur, Tiruvarur, Nagapattinam, Cuddalore.