Tobacco Fertilizer Calculator
Work out the exact urea, DAP and MOP for tobacco from the recommended 60:60:90 kg/ha N-P₂O₅-K₂O dose, adjusted to your soil test and field size.
FCV: all N as nitrate-N where possible, finished by 40 days, with chloride-free K (SOP only). Bidi types take heavier N for body. Chlorine ruins leaf burn — never use MOP on FCV.
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 Tobacco Fertilizer Calculator to convert the official tobacco 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 Tobacco Fertilizer Calculator
FCV tobacco may be agriculture's most quality-policed fertilizer program: chloride-free potash, early nitrate nitrogen and deliberate late starvation are what produce bright, even-burning leaf. This calculator starts from the published recommendation of 60:60:90 kg/ha N-P₂O₅-K₂O (fcv (flue-cured)) or 120:60:60 kg/ha N-P₂O₅-K₂O (bidi/rustica), 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 Tobacco Fertilizer Calculator
- 1Enter your field area and pick the unit (hectare, acre or bigha).
- 2Choose the growing condition (fcv (flue-cured) / bidi/rustica) 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 Tobacco Fertilizer Calculator?
- ✓Official package-of-practices dose for tobacco — 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 tobacco?+
FCV (flue-cured): 60 kg N, 60 kg P₂O₅ and 90 kg K₂O per hectare; Bidi/rustica: 120 kg N, 60 kg P₂O₅ and 60 kg K₂O per hectare. FCV: all N as nitrate-N where possible, finished by 40 days, with chloride-free K (SOP only).
Why can't MOP be used on flue-cured tobacco?+
Chloride above ~1% in leaf makes cured tobacco muddy-coloured and ruins its burn. FCV programs use sulphate of potash exclusively, despite the cost.
Why is FCV nitrogen stopped so early?+
The leaf must ripen nitrogen-starved to cure bright yellow. N after 40 days keeps leaf green through curing, dropping it into low-grade dark categories.
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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