Chemical Properties:
Formula: KH₂PO₄
Molecular Weight: 136.09 g/mol
Appearance: White crystalline powder or granules
Solubility: Highly soluble in water
pH: 4.4 – 4.8 (1% solution at 25°C)
Mono Potassium Phosphate (MPK) is a soluble salt of potassium and the dihydrogen phosphate ion which is used as a fertilizer, a food additive, and a fungicide. It is a source of phosphorus and potassium.
Use Cases:
Agriculture: MPK is often used as a source of potassium where soil levels of this essential nutrient are low. It’s favored in hydroponic systems and foliar feeding, due to its high solubility.
Horticulture: Utilized for encouraging flowering and fruiting in plants, MPK is applied to improve the size, quality, and overall yield of the produce.
Turf Management: In sports turf and golf courses, MPK is applied to promote healthy grass growth without the surge growth that can come from nitrogen-based fertilizers.
MPK is preferred for its nutrient availability and non-nitrogen containing properties, making it ideal for growth stages requiring a boost in phosphorus and potassium without additional nitrogen. Careful application is necessary to prevent over-fertilization, which can lead to nutrient burn and environmental impact.