![]() ![]() ![]() Organic matter in soil is rich in nitrogen.It produces the most significant yield response in crop plants by promoting rapid vegetative growth and healthy green colour.Nitrogen is a base element in all cells, proteins (chain of amino acids), hormones, and chlorophyll. ![]() Of NPK, nitrogen has received the maximum attention as it gets easily converted to soluble forms (nitrite) from various fertilisers.Plants require oxygen for cellular respiration during nighttime. Hydrogen, obtained from water, is also used in photosynthesis. Photosynthesis converts carbon dioxide into carbohydrates. Carbon and hydrogen are the major constituents of most biomolecules, including proteins, starches and cellulose.NPK - Nitrogen (N), Phosphorous (P) and Potassium (K) are the most significant macronutrients.Of the ten micronutrients, carbon, hydrogen and oxygen are obtained mainly from carbon dioxide (CO 2) and water (H 2O), while the others are absorbed from the soil as mineral nutrition.Macronutrients (9): Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorous (P), Potassium (K), Calcium (Ca), Sulfur (S),and Magnesium (Mg).Macronutrients are generally present in plant tissues in significant amounts, while micronutrients constitute less than 1% of the dry weight of most plants.Nine of these are macronutrients- required by plants in large amounts, and the other eight are micronutrients - required in trace amounts. 17 elements act as essential plant nutrients. ![]()
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