GENERAL KNOWLEDGE

Detailed explanation-1: -Two major non-metals that enhance the growth of plants as constituents of fertilizers are Nitrogen (N) and Phosphorous (P). Nitrogen helps in the leaf development and the green color of leaves is due to it. Phosphorus helps in the development of seeds and fruits and also as disease resistant.

Detailed explanation-2: -Potassium is the most commonly used metals for fertilizers.

Detailed explanation-3: -Nitrogen, phosphorus and potassium, or NPK, are the “Big 3” primary nutrients in commercial fertilizers.

Detailed explanation-4: -Most fertilizers that are commonly used in agriculture contain the three basic plant nutrients: nitrogen, phosphorus, and potassium. Some fertilizers also contain certain “micronutrients, ‘’ such as zinc and other metals, that are necessary for plant growth.