Monopotassium phosphate (MKP) is a high-performance, water-soluble fertiliser ingredient used wherever growers and formulators need precise delivery of phosphorus (P) and potassium (K). As fertigation, hydroponics and protected cropping continue to expand, MKP has become a dependable choice thanks to its clean solubility, consistent analysis, and strong fit with modern nutrition programs.
At Redox, we supply quality monopotassium phosphate to customers across agriculture, horticulture and specialty fertiliser markets supported by global sourcing, technical support and reliable logistics.
What is Monopotassium Phosphate?
Monopotassium phosphate (chemical formula KH₂PO₄) is a crystalline salt that delivers two essential macronutrients in one product. Phosphorus plays a central role in early plant development and energy transfer, supporting root growth and progression through flowering and fruit set. Potassium supports plant vigour, water regulation and stress tolerance, and is closely linked to fruit quality attributes such as size, colour development and sugar accumulation.
Because MKP dissolves readily and is typically supplied with low impurities, it suits systems where consistency and cleanliness matter.
Why MKP is widely used
MKP is valued for its compatibility with precision feeding systems. In practice, that usually comes down to a few key advantages:
- Highly water-soluble, making it easy to mix and deliver accurately
- Well-suited to fertigation and hydroponics, where nutrient control is critical
- Typically low in sodium and chloride, supporting sensitive crops and quality programs
- Compatible with many nutrient strategies when used correctly within the overall program
Common applications in agriculture and horticulture
MKP is frequently used in intensive cropping systems where nutrient timing and delivery method are tightly managed, including:
- Fertigation in drip and micro-irrigation programs
- Hydroponics and controlled-environment farming (including stock solutions and phase-based feeding)
- Protected cropping such as greenhouses and high-value horticulture
- Foliar nutrition programs where targeted support is needed during key growth windows (rates and compatibility should be validated for crop and conditions)
Redox Monopotassium Phosphate (MKP) Product Sheet – Key specifications and use guidance for a fully water-soluble 0-22-28 grade (22% P, 28% K), including solubility data, application methods (fertigation/foliar), and indicative crop rates (25 kg bags).
What’s driving demand?
A shift toward efficiency is pushing more growers toward water-soluble inputs that perform predictably. The growth of fertigation and protected cropping, alongside the rise of hydroponics, has increased demand for nutrient sources that are clean, consistent and easy to handle. At the same time, quality expectations on produce continue to climb—meaning nutrition programs are being refined to support uniformity, yield and market-ready results.
How Redox adds value
Redox supports customers with MKP backed by dependable supply and practical technical support. We work with established global partners and provide the documentation customers need for their markets, while our logistics network helps maintain continuity through seasonal demand.
Partner with Redox
Whether you’re formulating water-soluble fertiliser blends, supplying hydroponic nutrient systems or supporting fertigation programs in the field, Redox can help with quality monopotassium phosphate and reliable service.
Contact Redox to discuss specifications, grades, and application requirements.