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Mono potassium phosphate is a fully water-soluble fertilizer with an NPK of 0-52-34, supplying phosphorus and potassium with no nitrogen. It dissolves completely for drip irrigation, hydroponics, sprinklers, pivots, or foliar spraying, and its buffering effect keeps nutrient solution pH stable. The high P:K ratio suits flowering, fruit set, ripening and harvest, when plants need less nitrogen. Compared with nitrogen-bearing bloom boosters, it gives cleaner control of nitrogen; its main trade-offs are the low nitrogen and the fact that smaller pack sizes arrive in plain bags.
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Mono potassium phosphate (MKP, KH2PO4) is a water-soluble PK fertilizer for fertigation. It supplies phosphorus and potassium and contains no nitrogen. It has a low salt index and dissolves quickly and completely in water.
Because it has no nitrogen, it can be combined with any nitrogen-containing fertilizer. This lets growers set the P:K ratio for stages that need less nitrogen, such as rooting, flowering, fruit set, ripening and harvest. It contains no chlorides, sodium or relevant heavy metals. It also has a buffering effect that tends to stabilize the pH of nutrient solutions.
It can be used on any crop and in any fertigation system: drip irrigation, hydroponics, sprinklers, pivots or foliar spray. The product is free-flowing. A 0.5% sulfate (SO4) content from the production process keeps it that way.
