A strong start decides the season. Ammonium polyphosphate delivers readily-available phosphorus that builds powerful early roots.
Why polyphosphate starts strong
Polyphosphate keeps phosphorus — and nearby micronutrients like zinc — available in the root zone instead of locking up in soil. Applied at sowing or transplant, it drives fast, deep rooting that carries the crop through the whole season.
Dosage
| Application | Rate | Stage |
|---|---|---|
| Drip / Fertigation | 2–4 L per acre | Early growth |
| Starter dose | 1–2 L per acre | At planting / transplant |
👉 Pro tip: Place starter phosphorus near the young roots at planting — early access to P sets the yield ceiling.
Key Takeaways
- Ideal starter fertilizer
- Polyphosphate keeps P available
- Builds strong early roots
- Improves nutrient-use efficiency
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Disclaimer: doses are general guidelines. Always adjust to crop, soil test, growth stage and local agronomist advice.