NEET BIOLOGY

Detailed explanation-1: -Nitrogen, phosphorus and potassium, or NPK, are the “Big 3” primary nutrients in commercial fertilizers. Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element.

Detailed explanation-2: -These three numbers form what is called the fertilizer’s N-P-K ratio-the proportion of three plant nutrients in order: nitrogen (N), phosphorus (P) and potassium (K). The product’s N-P-K numbers reflect each nutrient’s percentage by weight.

Detailed explanation-3: -NPK (nitrogen, phosphorus, and potassium) are the main ingredients in most fertilizers. The letters NPK stand for the three major nutrients that plants need to live and grow – nitrogen, phosphorus, and potassium. Plants need other nutrients like iron, calcium, and even chlorine, but N, P, and K are the big three.

Detailed explanation-4: -Nitrogen is used by plants for lots of leaf growth and good green color. Phosphorous is used by plants to help form new roots, make seeds, fruit and flowers. It’s also used by plants to help fight disease. Potassium helps plants make strong stems and keep growing fast.

Detailed explanation-5: -The aim of Nutrient Based Subsidy Policy is to increase the consumption of P & K fertilizers so that an optimum balance of N:P:K = 4:2:1 can be achieved. There are 6 macro nutrients that are needed for well balanced growth of crops. These are –