Soil types are classified according to many more factors. They are
classified on the basis of colour, depth, pH, productivity, texture and
process of formation.
Soil types according to depth are as follows:
1) Shallow Soil - Soil depth less than 22.5cm. Only shallow rooted crops are grown in such soil, e.g. Paddy, Nagli.
2) Medium deep soil - Soil depth is 22.5 to 45cm. Crops with medium
deep roots are grown in this type of soil e.g. Sugar cane, Banana, Gram.
3) Deep soil - Soil depth is more than 45cm. Crops with long and deep roots are grown in this type a soil e.g. Mango, coconut