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[17] [18] The dominance of muriate of potash in the fertilizer market is due to its high potassium content (approximately 60% K 2 O equivalent) and relative affordability compared to other potassium sources like sulfate of potash ( potassium sulfate ).
At the beginning of 2008, potash prices started a meteoric climb from less than US$200 a tonne to a high of US$875 in February 2009. [41] These subsequently dropped dramatically to an April 2010 low of US$310 level, before recovering in 2011–12, and relapsing again in 2013.
Indian Potash Limited was founded in 1955 as Indian Potash Supply Agency. After independence of India from British rule in 1947, there were a number of importers of Muriate of Potash (MOP) mainly for application on tea/coffee gardens and other plantation crops.
5 consists of 56.4% elemental oxygen and 43.6% elemental phosphorus by weight. Therefore, the elemental phosphorus percentage of a fertilizer is 0.436 times its P value. K 2 O consists of 17% oxygen and 83% elemental potassium by weight. Therefore, the elemental potassium percentage is 0.83 times the K value.
A 50-pound (23 kg) bag of fertilizer labeled 16-4-8 contains 8 lb (3.6 kg) of nitrogen (16% of the 50 pounds), an amount of phosphorus equivalent to that in 2 pounds of P 2 O 5 (4% of 50 pounds), and 4 pounds of K 2 O (8% of 50 pounds).
The location is known as Potash on U.S. Geological Survey (USGS) topographic maps, and is east of Dead Horse Point State Park and Canyonlands National Park. [4] According to USGS reports, the Paradox Basin contains up to 2.0 billion tons (1.8 billion metric tonnes) of potash, with the primary mine being the one at Kane Creek.
The most widely used potassium fertilizer is potassium chloride (muriate of potash). [6] Other inorganic potassium fertilizers include potassium nitrate, potassium sulfate, and monopotassium phosphate. Wood ash also has high potassium content but must be used cautiously due its effect on pH level. [7]
Most of the mined potassium mineral ends up as potassium chloride after processing. The mineral industry refers to potassium chloride either as potash, muriate of potash, or simply MOP. [55] Pure potassium metal can be isolated by electrolysis of its hydroxide in a process that has changed little since it was first used by Humphry Davy in 1807.
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