Okra Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of okra (FAO-56 ETc = ET₀ × Kc, peak Kc 1.05) for your field, climate, soil and irrigation method.
Summer okra needs watering every 4–5 days; moisture stress makes pods fibrous and stops new flowering. Keep the picking-stage crop well supplied. Avoid waterlogging, which yellows the crop and invites root rot.
Indicative planning figures based on published research averages. Local soil tests, varieties and weather change actual requirements — confirm with your agronomist or extension officer.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Farmers and irrigation planners use the free Okra Water Requirement Calculator to turn the FAO-56 crop coefficients for okra into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Okra Water Requirement Calculator
Okra needs 400–550 mm, with summer crops requiring frequent irrigation to keep pods tender through the picking weeks. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with okra's own crop coefficients (Kc 0.5 initial, 1.05 mid-season, 0.75 late) across a 100-day season. Pick your climate band (which sets reference ET₀), irrigation method (drip, sprinkler, pivot or surface — each with its own efficiency) and soil texture, and it returns the seasonal water need in cubic metres, the peak daily demand, the net depth per irrigation and how many days to wait between irrigations.
How to use Okra Water Requirement Calculator
- 1Enter your field area and choose the climate band matching your season.
- 2Select your irrigation method and soil texture.
- 3Read the seasonal water volume, peak daily demand and irrigation interval, then follow the scheduling note.
Why use Okra Water Requirement Calculator?
- ✓Uses okra's real FAO-56 Kc curve, not a flat factor
- ✓Accounts for drip / sprinkler / pivot / surface efficiency
- ✓Gives seasonal volume, peak daily need and an irrigation interval
- ✓Free, instant and fully in-browser — works offline in the field
Frequently asked questions
How much water does okra need?+
Okra needs 400–550 mm, with summer crops requiring frequent irrigation to keep pods tender through the picking weeks. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 100-day growth stages for your conditions.
Why are my okra pods fibrous and tough?+
Moisture stress during pod development toughens okra fast (over-mature pods also turn fibrous). Frequent irrigation in summer plus picking every 2–3 days keeps pods tender and the plant flowering.
How often should okra be irrigated in summer?+
Every 4–5 days in peak summer for the shallow-rooted crop; the flowering and continuous podding stages must not dry out. Kharif okra usually needs far less with monsoon rain.
What is ET₀ and Kc?+
ET₀ (reference evapotranspiration) is how fast a standard grass surface loses water in your climate. Kc (crop coefficient) scales it to a specific crop and growth stage. Crop water use ETc = ET₀ × Kc — the basis of FAO-56 irrigation scheduling.
Is this calculator free and private?+
Yes — free, no sign-up, and all calculation runs in your browser, so it works offline in the field and your data never leaves the device.
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