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Nitrogen Fertilizer Essay

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Chapter one

Chapter 2
Literature review
Importance of Nitrogenous fertilizers
N fertilizer applications remain essential and are contributing about 30–50 % crop yield increase (Erisman et ,.al. 2008) .According to Smil, (2001) the increased use of N fertilizer has been a major contributor to global food production for the past 50 years .Nitrogen is one of the most important macronutrients needed by crops during their growth cycles.It is an essential component of enzymes, proteins and pigments such as chlorophyll.(Xiaoyuan et ,.al 2003). Nitrogen is known to stimulate crop development, roots and also aids in the uptake of other nutrients. Compared to other major macro elements such as phosphorus and potassium there are no known rock minerals which release nitrogen .Georges, Oswald (2004). As a result nitrogen fertilizers are manufactured by converting the unreactive di-nitrogen gas into reactive forms which can be utilized by plants.
Nitrogen fertilizers
The most common nitrogen fertilizers used are urea and ammonium nitrate. Urea (CO(NH2)2 is …show more content…

This has resulted in farmers opting to use one application of controlled release fertilizers. Shoji (2005) backed the idea of opting for slow release fertilizers by implying it has led to the innovation of various agro-technologies in field crops including new concepts of nitrogen fertilizer applications. Major ideology being brought up by Shoji (2005) is that with slow-controlled release fertilizers it is easier for the farmer to synchronize between supply and uptake of the nitrogen (N) nutrients as the slow release fertilizers tend not make the nutrient available at one

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