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More precisely, the first number ("N value") is the percentage of elemental nitrogen by weight in the fertilizer; that is, the mass fraction of nitrogen times 100. The second number ("P value") is the percentage by weight of phosphorus pentoxide P 2 O 5. The third number ("K value") is the equivalent content of potassium oxide K 2 O. [3]
The Scotts Miracle-Gro Company is an American multinational corporation headquartered in Marysville, Ohio, where O.M. Scott began selling lawn seed in 1868. [2] The company manufactures and sells consumer lawn, garden and pest control products, as well as soilless indoor gardening equipment. [ 3 ]
Nitrogen plays a vital role in the nitrogen cycle, a complex biogeochemical process that involves the transformation of nitrogen between different chemical forms and its movement through various environmental compartments such as the atmosphere, soil, water, and living organisms. [1]
For foodstuffs with a nutrition analysis, the N content may be estimated from the protein content as prot% × 0.16, reversing the crude protein calculation. [21] The C content may be estimated from crude ash content (often reported in animal feed) [19] or from reported macronutrient levels as carbs% × 0.44 + fat% × 0.86 + prot% × 0.53. [22]
Terra Nitrogen Company, L.P. Files 2012 Annual Report DEERFIELD, Ill.--(BUSINESS WIRE)-- Terra Nitrogen Company, L.P. (TNCLP) (NYS: TNH) has filed its annual report on Form 10-K for the fiscal ...
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The early product had 60 percent of the total nitrogen cold-water-insoluble, and the unreacted (quick-release) less than 15%. Methylene ureas, e.g. methylene diurea, were commercialized in the 1960s and 1970s, having 25% and 60% of the nitrogen as cold-water-insoluble, and unreacted urea nitrogen in the range of 15% to 30%.
Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation . [ 1 ] As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century.