Plant nutrition refers to the need for basic chemical elements for
plant growth and the interrelated steps by which a living organismassimilates food and uses it for growth and replacement of tissue.
What are fertilizers?
Think of fertilizers as plant food. Fertilizers are combination of the nutrients that plants must have to grow, in a form they can use. The primary nutrients in fertilizers are three essential elements: Nitrogen (N), Phosphorus (P) and Potassium (K), which are often combined into an NPK blend.
(Sulphur, Calcium and Magnesium) are needed in smaller amounts for normal plant growth. Micronutrients are also needed but in even smaller quantities. Micronutrients include Boron, Chlorine, Copper, Iron, Manganese, Molybdenum, Nickel and Zinc.
These plant nutrients can be supplied through organic fertilizers such as plant residues or livestock manure, or mineral fertilizers, which are chemically processed to meet crop needs. A deficiency in any nutrient whether primary, secondary or
micro-nutrients affects the yields directly.