ABSTRACT
Introduction Nitrogen is the essential primary nutrient for plant growth and development. Amongst the nutrients nitrogen requirement is high after carbon, hydrogen and oxygen. In air, nitrogen is the highest percent present. However, gaseous nitrogen is not generally available to plant except by micro organisms. Hence, nitrogen necessary should be made available in ionic form. Naturally, nitrogen is available in soil by decomposition of organics. But with the time and growth, demand for high growth and yield of plants and depletion of organics in soil the nitrogen availability in soil becomes insufficient. Therefore, addition of inorganic fertilizer becomes imperative as the deficiency symptom of nitrogen is predominant in plants. The deficiency of nitrogen has very much detrimental influence on growth and development. This influence of nitrogen nutrition is most vital and its maintenance requires judicious application of nitrogenous fertilizer along with other nutrient fertilizers, though organic matters deposited in the soil after decomposition provide a significant amount of nitrogen for plants.
