Brinjal Fertilizer Calculator
Work out the exact urea, DAP and MOP for brinjal from the recommended 150:75:75 kg/ha N-P₂O₅-K₂O dose, adjusted to your soil test and field size.
Basal: half N + full P, K. Top-dress remaining N in two splits at 30 and 55 days after transplanting; long-duration hybrids benefit from a small extra N+K dose after each major picking flush.
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 Brinjal Fertilizer Calculator to convert the official brinjal 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 Brinjal Fertilizer Calculator
Brinjal keeps bearing for 5–6 months when fed steadily — the dose here is split to follow picking flushes so the plant never runs out mid-season. This calculator starts from the published recommendation of 150:75:75 kg/ha N-P₂O₅-K₂O (hybrid) or 100:50:50 kg/ha N-P₂O₅-K₂O (open-pollinated), 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 Brinjal Fertilizer Calculator
- 1Enter your field area and pick the unit (hectare, acre or bigha).
- 2Choose the growing condition (hybrid / open-pollinated) 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 Brinjal Fertilizer Calculator?
- ✓Official package-of-practices dose for brinjal — 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 brinjal?+
Hybrid: 150 kg N, 75 kg P₂O₅ and 75 kg K₂O per hectare; Open-pollinated: 100 kg N, 50 kg P₂O₅ and 50 kg K₂O per hectare. Basal: half N + full P, K.
How often should I fertilize a long-duration brinjal crop?+
After the basal dose, top-dress nitrogen at 30 and 55 days, then a light N+K supplement after each heavy picking flush keeps long-duration hybrids productive into the fifth month.
What nutrient deficiency causes small, dull brinjal fruit?+
Usually potassium shortage — K builds fruit size and the glossy finish buyers pay for. Verify with a soil test and keep K in the basal dose rather than skipping it.
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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