Concept:India is an agriculturally important country.Two-thirds of its population is engaged in agricultural activities.Agriculture is a primary activity, which produces most of the food that we consume. Explanation:Using excessive chemicals:In commercial farming, excessive chemicals, fertilizers and pesticides are used.This is done to obtain higher productivity.Excessive and imprudent use of chemicals has led to the depletion of essential micronutrients in the soil.Excessive use of chemicals is held responsible for degrading the soils.Continuous use of these can turn the fields barren.Thus, growing the same crop over and over and using so many chemicals makes the soil barren.