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A fertilizer (American English) or fertiliser (British English) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Many sources of fertilizer exist, both natural and industrially produced. [1]
Sulfur fertilizers should only be used in responsive crops with a high rate of crop recovery. [42] By reducing anthropogenic sources of sulfur dioxides and nitrogen oxides, and with air-pollution control measures, let us [who?] try to reduce acid rain and soil acidification worldwide. [43]
Urea phosphate is a 1:1 combination of urea and phosphoric acid that is used as a fertilizer. It has an NPK formula of 17-44-0, [1] and is soluble in water, producing a strongly acidic solution. Urea phosphate is available in fertilizer vendor bags that carry a UP signet on the packaging.
Locations that have high rainfall levels become acidic through leaching. Land used for crop and livestock purposes loses minerals over time by crop removal and becomes acidic. [5] The application of modern chemical fertilizers is a major contributor to soil acid by the process in which the plant nutrients react in the soil. [6]
Nitrogen and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis. For example, a 10-10-15 fertilizer has 10 percent nitrogen, 10 percent available phosphorus (P 2 O 5) and 15 percent water-soluble potassium (K 2 O). Sulfur is the fourth element that may ...
Dilution also causes more acid to convert into lactate which is an attractive food for soil microbes. Other uses are either potentially damaging (e.g. feeding plants with acidic water) or wasteful (e.g. cleaning drains with plant nutrients, feeding plants with nutrients in a form they cannot take up).