•Fertilisers are chemicals, rich in a particular nutrient.

•Limited use of fertilizer increases crop yield.

•But excessive use of fertilisers is harmful to humans as well as other life and environment.

•Continuous use of fertilizer makes soil acidic and less fertile by removing nutrients from the soil.

•Fertilisers also cause water pollution, causes death of aquatic animals.

•Therefore, farmer should limit the use of chemical fertilizers in order to maintain the fertility of the soil.