Product Overview
Potassium Nitrate (KNO₃, 13-0-46) is a fully water-soluble crystalline fertilizer that combines 13% nitrate nitrogen with 46% K₂O, making it the premier potassium source for fertigation and foliar feeding in high-value horticulture. This dual-nutrient salt delivers immediately plant-available nitrogen and potassium with zero chloride, zero sulphate, and an exceptionally low salt index. Dongkwang Poland supplies technical and agricultural grade KNO₃ sourced from SQM-licensed European processors, ensuring consistent purity and compliance with EU fertiliser regulations.
How Potassium Nitrate (KNO₃) Works
Potassium nitrate dissolves completely in water, releasing K⁺ and NO₃⁻ ions for immediate root uptake. The nitrate-nitrogen form is directly assimilable without soil conversion, providing rapid potassium and nitrogen nutrition within hours of application. The synergistic K-N combination enhances sucrose transport, enzyme activation, and protein synthesis simultaneously, making it more efficient than applying separate K and N sources. Its neutral pH effect prevents soil acidification common with ammonium-based fertilizers.
Key Benefits
Application Guide
Fertigation: dissolve 2-5 kg per 1,000L irrigation water, applied 2-3 times per week during fruiting stages. Foliar spray: 1-2% solution (10-20 g/L) applied early morning or late afternoon. For greenhouse tomatoes: 3-4 kg/1,000L in each irrigation cycle during fruit fill. For open-field grapes: foliar applications of 1.5% at veraison. Compatible with most water-soluble fertilizers except calcium-containing products (mix separately to avoid precipitation).
Ideal For
Storage & Handling
Store in cool, dry conditions away from combustible materials. KNO₃ is a strong oxidiser (GHS Category 2) — segregate from organic matter, fuels, and reducing agents. Maximum stack height: 2 pallets. Shelf life: 36 months. Comply with EU CLP Regulation for labelling and transport. ADR Class 5.1 for transport. Use PPE: gloves, goggles, dust mask.
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