Water-soluble fertilizers deliver nutrients fast and efficiently — but only when dosed correctly. This guide gives you a clear, crop-ready dosage reference for drip and foliar application.
Why dosage matters
Over-dosing wastes money and can scorch the crop; under-dosing starves it. Water-soluble grades are concentrated, so small changes make a big difference. Always dissolve fully and apply in the cooler part of the day.
General Dosage Reference
| Application | Rate | Notes |
|---|---|---|
| Drip / Fertigation | 2–5 kg or L per acre | Split across the week for steady feeding |
| Foliar spray | 3–5 g or ml per litre | Spray early morning / late evening |
| Seedling / nursery | Half the field rate | Young plants are sensitive |
👉 Pro tip: Do a small jar test first — mix your fertilizer in water and check it dissolves clear with no residue before filling the tank.
Key Takeaways
- Match the grade to the crop stage (vegetative vs flowering vs fruiting)
- Split doses beat one heavy dose
- Foliar is fast correction; drip is steady feeding
- Never mix incompatible products without a jar test
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Disclaimer: doses are general guidelines. Always adjust to crop, soil test, growth stage and local agronomist advice.