Soil becomes fertile primarily through the addition of nutrients and organic matter.
Fertility in soil is achieved by enhancing its nutrient content and physical properties. This is commonly done by adding substances like manures and fertilizers. Fertilizers contain essential elements, such as nitrogen (N), phosphorus (P), and potassium (K), often represented as NPK. Urea is a specific fertilizer that significantly increases the nitrogen levels in the soil. Furthermore, the incorporation of organic matter improves soil structure, water retention, and overall health, fostering an environment conducive to plant growth.
