Water-Soluble NPK — Precision Nutrients for Fertigation Systems
Fully water-soluble NPK fertilizers dissolve completely at field-use concentrations, delivering nitrogen, phosphorus and potassium simultaneously through drip emitters, pivot injection and sprinkler fertigation. With 99% minimum solubility and moisture below 0.5%, these grades prevent emitter clogging and sediment buildup in mixing tanks. N-P-K ratios span 10-20% N, 10-30% P2O5 and 10-30% K2O to match crop stage requirements. From 300 MT.
Composition & Limits
- FOB
- CFR
- CIF
- Agriculture
- Blending
- Fertigation
Fertigation Guidelines
Select the NPK ratio matching crop phenology — higher P during establishment, higher K during fruiting. Dissolve in tank water at 20–30°C with mechanical agitation; never exceed solubility limits printed on the COA. Available in 25 kg bags and 1,000 kg big bags for commercial greenhouse and orchard operations.
FAQ
How do I choose the right water-soluble NPK ratio for my crop?
Match ratio to growth stage: 20-20-20 for vegetative growth, 10-30-20 for flowering transition, 15-5-30 for fruit ripening. Soil and water test results should guide base-rate adjustments.
Can water-soluble NPK be tank-mixed with micronutrients?
Yes, with chelated micronutrients (EDTA, DTPA forms) in the same fertigation solution. Avoid mixing with non-chelated sulphates in concentrated stock tanks — use separate injection lines or sequential application.
What is the shelf life of water-soluble NPK in sealed bags?
Properly stored in dry conditions below 30°C, product maintains solubility specifications for 24 months. Re-seal opened bags promptly and use within 3 months to prevent moisture uptake and caking.