NPK 13-10-20 — Mid-Season K Boost for Fruiting Vegetables
When fruiting vegetables transition from vegetative to reproductive growth, potassium demand surges while nitrogen requirement moderates. NPK 13-10-20 matches this shift with 20% K2O, 13% N and 10% P2O5 — applied at flowering to support fruit set, sizing and quality in tomato, pepper and eggplant. From 1,000 MT.
Grade Analysis
- FOB
- CFR
- CIF
- Agriculture
- Blending
- Fertigation
Mid-Season Dressing
Apply 200–300 kg/ha at first flower cluster appearance, 15–20 cm from the plant row. On drip-irrigated crops, granular 13-10-20 can be side-dressed and incorporated by cultivation, or replaced with fertigation-grade soluble NPK for precision timing.
FAQ
Why reduce N to 13% during fruiting?
Excess nitrogen during fruit set promotes vegetative growth at the expense of fruit number and quality. 13-10-20 provides enough N to maintain leaf health without overstimulating vine growth.
Can 13-10-20 be used on potato?
Yes, at tuber initiation — the 20% K supports tuber bulking and specific gravity. Apply 250–350 kg/ha when tubers reach marble size.
Is 13-10-20 chloride-free available?
Standard grade uses MOP (contains chloride). Specify SOP-based production for chloride-sensitive potato varieties and export-quality tomato.