Product Overview
High-Potassium NPK 10-10-20 is a potassium-enriched compound fertilizer specifically formulated for the reproductive and fruiting stages of crop production. With K₂O content double that of nitrogen and phosphorus, this product drives fruit quality parameters that directly impact market value — brix (sugar content), color intensity, firmness, and shelf life. The potassium sulphate (K₂SO₄) base delivers chloride-free potassium, making it safe for chloride-sensitive crops like tomatoes, peppers, grapes, and stone fruits. Produced at Dongkwang Poland’s REACH-compliant facility and exported to premium horticultural markets across Europe, the Middle East, and North Africa.
How High-Potassium NPK 10-10-20 Works
Potassium is the quality nutrient — it activates over 80 enzymes involved in protein synthesis, starch formation, and sugar transport. The 20% K₂O in this formulation enhances phloem loading of sucrose from leaves to fruits, directly increasing sugar content and flavor intensity. Potassium also regulates stomatal opening/closing, improving water use efficiency by up to 25% in drought-prone environments. The sulphate form avoids the osmotic stress caused by chloride-based potassium sources, preserving cell membrane integrity in sensitive crops.
Key Benefits
Application Guide
For tomatoes: apply 500 kg/ha split into three applications — 200 kg at transplanting, 150 kg at first truss set, and 150 kg at fruit sizing. For grapes: apply 400 kg/ha in two splits — budbreak and veraison. For peppers: 450 kg/ha in three equal splits from transplanting through fruiting. For fruit trees (apple, citrus): apply 300-500 kg/ha depending on tree age, split between post-harvest and pre-bloom. Soil application via broadcast or banding; compatible with fertigation when dissolved.
Ideal For
Storage & Handling
Store in dry conditions away from moisture and direct sunlight. The sulphate-based formulation has lower hygroscopicity than chloride-based products, ensuring excellent shelf stability. Stack maximum 3 pallets high. Shelf life: 24 months. Reseal bags after opening to prevent moisture absorption. Use standard PPE during handling.
Why Choose Dongkwang Poland?
Dongkwang Poland sources premium potassium sulphate from controlled supply chains to guarantee consistent K₂O content and minimal chloride contamination (<1%). Our granulation process produces uniform 2-4mm particles for precise spreading, and every batch is verified against strict quality parameters documented in the Certificate of Analysis. Our horticultural agronomists specialize in fertigation program design for greenhouse and open-field fruit production.
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