(i) Maharashtra, Madhya Pradesh and Chhattisgarh
Black soil is ideal for growing cotton.
(ii) Alluvial soil
Alluvial soils are very fertile. They are ideal for growing sugarcane, wheat and paddy. As it has more kankar nodules, old alluvial is less fertile than new alluvial.
(iii) In the hilly areas, soil erosion can be controlled by ploughing across contour lines, making use of terrace farming techniques and using strips of grass to check erosion by wind and water.
(iv) Biotic resources are composed of living things, and are derived from the biosphere, e.g., human beings, fisheries and livestock.
Abiotic resources are composed of non-living things, e.g., metals and rocks.