Fertilizers

High-Quality Monopotassium Phosphite Supplier | Reliable China Manufacturer

  • Type Fertilizer
  • E No.
  • CAS No. 13977-65-6
  • Qty in 20' FCL 27MTs
  • Packaging 25kg bags
Monopotassium Phosphite: Application, Usage, and Advantages

Introduction:
Monopotassium Phosphite (MKPΦ, chemical formula KH₂PO₃) is a high-efficiency source of phosphorus and potassium, widely used in agriculture, horticulture, and industry. With excellent solubility and bioavailability, Monopotassium Phosphite has become an essential ingredient in modern plant nutrition and disease resistance programs.

Applications:

  • Agriculture:
    Used as a fertilizer and plant growth promoter. It enhances plant defense mechanisms against fungal and bacterial pathogens, while providing essential nutrients for healthy growth.

  • Horticulture:
    Applied in fruits, vegetables, and ornamental plants to boost yield, improve stress tolerance, and stimulate strong root development.

  • Industrial Use:
    Serves as an intermediate in the production of various phosphorus-based chemicals.

How to Use Monopotassium Phosphite:

  • Foliar Spray:
    Dilute Monopotassium Phosphite with water (typically 0.2%-0.4%) and spray evenly over plant leaves during critical growth stages.

  • Soil Application:
    Can be mixed with irrigation water (fertigation) to promote root absorption. Application rates depend on the crop and soil conditions, usually around 2-4 kg/ha per application.

  • Compatibility:
    Monopotassium Phosphite is compatible with most fertilizers and agrochemicals but should not be mixed with acidic products unless properly tested.

Performance Compared to Other Phosphates:

PropertyMonopotassium PhosphiteMonopotassium Phosphate (KH₂PO₄)Diammonium Phosphate (DAP)
Main ComponentsPhosphite (PO₃³⁻) + PotassiumPhosphate (PO₄³⁻) + PotassiumPhosphate (PO₄³⁻) + Ammonium
Plant Health EffectsStimulates disease resistance, systemic acquired resistance (SAR)Supplies nutrientsSupplies nutrients
SolubilityVery HighHighModerate
pH ValueSlightly acidicNeutralAlkaline
BioavailabilityRapid absorption, direct defense activationMainly nutritionalMainly nutritional
  • Monopotassium Phosphite not only provides nutrients but also acts directly as a plant defense activator, something traditional phosphates cannot do.

  • Especially valuable for high-value crops needing both nutrition and enhanced disease resistance.

Synonyms for Monopotassium Phosphite:

  • MKPΦ

  • Potassium Phosphite Monobasic

  • Phosphonic Acid, Monopotassium Salt

  • KH₂PO₃

Why Choose Us:

  • Strict quality control with ≥98% purity

  • Reliable supply chain and fast shipment worldwide

  • Professional technical support for usage guidance

  • Competitive pricing for bulk orders

Order Information:
We support bulk and customized orders for Monopotassium Phosphite. Samples are available upon request. Contact us for the latest quotations and product specifications.

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