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The International Fertilizer Association (IFA) promotes the efficient and responsible production, distribution and use of plant nutrients to enable sustainable agricultural systems. IFA a membership consists of more than 400 entities from producers through traders and distributors, as well as service providers, research organizations, tech ...
Its product line also includes phosphate and potash-based mineral fertilizers, as well as complex and specialty mineral fertilizer products. [ 3 ] [ 4 ] [ 5 ] The company was established in 1905 as Norsk Hydro — the world's first producer of mineral nitrogen fertilizers — and de-merged as Yara International ASA on 25 March 2004. [ 6 ]
NPK ratings consist of three numbers separated by dashes (e.g., 10-10-10 or 16-4-8) describing the chemical content of fertilizers. [ 29 ] [ 30 ] The first number represents the percentage of nitrogen in the product; the second number, P 2 O 5 ; the third, K 2 O. Fertilizers do not actually contain P 2 O 5 or K 2 O, but the system is a ...
Its K value is therefore 52/0.83 = 63; that is, a fertilizer that gets all its potassium from K 2 O and has the same potassium contents as pure KCl would have to be 63% K 2 O. Pure KCl fertilizer would thus be labeled 0-0-63. Since sylvite contains other compounds that contribute no N, P, or K, it is usually labeled 0-0-60.
The most commonly used grade of these fertilizer solutions is UAN 32.0.0 (32%N) known as UN32 or UN-32, which consists of 45% ammonium nitrate, 35% urea and only 20% water. Other grades are UAN 28, UAN 30 and UAN 18.
Monopotassium phosphate (MKP) (also, potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate) is the inorganic compound with the formula KH 2 PO 4. Together with dipotassium phosphate (K 2 HPO 4. (H 2 O) x) it is often used as a fertilizer, food additive, and buffering agent.
Controlled-release fertilizer is also known as controlled-availability fertilizer, delayed-release fertilizer, metered-release fertilizer, or slow-acting fertilizer. Usually CRF refers to nitrogen-based fertilizers. Slow- and controlled-release involve only 0.15% (562,000 tons) of the fertilizer market (1995).
Bat guano is partially decomposed bat excrement and has an organic matter content greater than 40%; it is a source of nitrogen, and may contain up to 6% available phosphate (P 2 O 5). [2] [3] Raw insectivorous bat guano. The feces of insectivorous bats consists of fine particles of insect exoskeleton, which are largely composed of chitin.