Sweet corn Fertilizer Calculator
Work out the exact urea, DAP and MOP for sweet corn from the recommended 150:75:50 kg/ha N-P₂O₅-K₂O dose, adjusted to your soil test and field size.
Basal: one-third N + full P, K. Top-dress one-third N at knee-high (V6) and one-third at tasseling. Harvest at 70% moisture — fertilizer timing exists to hit that narrow picking window.
Indicative planning figures based on published research averages. Local soil tests, varieties and weather change actual requirements — confirm with your agronomist or extension officer.
Farmers and agronomists use the free Sweet corn Fertilizer Calculator to convert the official sweet corn recommendation into exact urea, DAP and MOP quantities for their own field in seconds — no agronomy tables, no spreadsheet, and it works offline in the field.
About Sweet corn Fertilizer Calculator
Sweet corn is maize on a deadline: the same N-led program as grain maize but compressed, because the crop is picked green at peak sugar 18–22 days after silking. This calculator starts from the published recommendation of 150:75:50 kg/ha N-P₂O₅-K₂O (irrigated (fresh-market)), adjusts it ±25% for your soil-test N, P and K ratings, scales it to your field area in hectares, acres or bigha, and converts the nutrients into real products — urea (46% N), DAP (18-46-0) and MOP (0-0-60) — including the number of bags to buy.
How to use Sweet corn Fertilizer Calculator
- 1Enter your field area and pick the unit (hectare, acre or bigha).
- 2Choose the growing condition and your soil-test ratings for N, P and K — leave Medium if you have no recent soil test.
- 3Read off the urea, DAP and MOP quantities and bag counts, then follow the split-application note for timing.
Why use Sweet corn Fertilizer Calculator?
- ✓Official package-of-practices dose for sweet corn — not a generic NPK guess
- ✓Soil-test Low/Medium/High ratings adjust the dose ±25% automatically
- ✓Converts nutrients to urea, DAP and MOP bags, with the DAP nitrogen credit handled correctly
- ✓Works in hectares, acres and bigha — and runs fully in your browser, even offline in the field
Frequently asked questions
What is the recommended fertilizer dose for sweet corn?+
Irrigated (fresh-market): 150 kg N, 75 kg P₂O₅ and 50 kg K₂O per hectare. Basal: one-third N + full P, K.
How is sweet corn fertilization different from grain maize?+
The dose is similar but ends earlier — the final N at tasseling fuels ear fill, and the crop leaves the field weeks before grain maize would, so late-season feeding is pointless.
Does extra nitrogen make sweet corn sweeter?+
No. Sweetness is genetics (su/se/sh2) plus harvest timing. N builds ear size and tip fill; harvesting within the 2–3 day peak window is what protects sweetness.
How does the calculator convert NPK into urea, DAP and MOP?+
DAP (46% P₂O₅) is sized to cover the phosphorus need; the nitrogen it also carries (18% N) is credited against the N requirement, and urea (46% N) supplies the balance. MOP (60% K₂O) covers potassium. Bag counts use 45 kg urea and 50 kg DAP/MOP bags.
Is this tool free, and does my data leave the device?+
It is completely free with no sign-up, and all calculation happens in your browser — nothing you enter is uploaded, so it also works offline in the field.
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