When soil lacks nutrients needed for crop growth, farmers might add fertilizer to the topsoil to promote the growth of crops.
Fertilizer is a natural or artificial substance that is usually added to soil to improve soil fertility, plant growth and productiveness. Nitrogen, phosphorus, and potassium are the major chemical elements in fertilizer that helps plants to grow. Addition of fertilizers to soils restores the chemical elements taken from the soil by previous plants and it improves natural fertility of the soil.
