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Ammonium sulfate (American English and international scientific usage; ammonium sulphate in British English); (NH 4) 2 SO 4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen and 24% sulfur.
AdvanSix Inc. is an American chemical company that produces nylon 6 and related chemicals such as caprolactam and ammonium sulfate fertilizers. [2] It operated as Honeywell's Resins and Chemicals division until 2016, when it was spun off as a separate company. [3] The unit accounted for 3 percent of Honeywell's sales at the time. [4]
The soil conditioning technology was presented at a symposium on "Improvement of Soil Structure" held in Philadelphia, Pennsylvania on December 29, 1951. The technology was strongly documented and was published in the June 1952 issue of the journal Soil Science , volume 73, June 1952 that was dedicated to polymeric soil conditioners.
Urea is highly soluble in water and is therefore also very suitable for use in fertilizer solutions (in combination with ammonium nitrate: UAN), e.g., in 'foliar feed' fertilizers. For fertilizer use, granules are preferred over prills because of their narrower particle size distribution, which is an advantage for mechanical application.
As a soil conditioner, it is mainly used to enhance the absorption and retention of fertilizers and other nutrients. [7] It is able to chelate minerals while remaining bio-degradable, an improvement compared to EDTA. [8] Further hydrolysis and oxidation produces a product even more similar to humus, marketed as "lignohumate". [9]
Soil amendments such as chemical fertilizers can cause soil acidification. Sulfur based fertilizers can be highly acidifying, examples include elemental sulfur and iron sulfate while others like potassium sulfate have no significant effect on soil pH. While most nitrogen fertilizers have an acidifying effect, ammonium-based nitrogen fertilizers ...
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The compounds permitted are copper sulfate, copper hydroxide, cuprous oxide, copper oxychloride, copper ammonium carbonate (at a maximum concentration of 25 g/L), and copper octanoate. According to the Soil Association the total copper that can be applied to organic land is 6 kg/ha/year. [16]
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