Mango Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of mango (FAO-56 ETc = ET₀ × Kc, peak Kc 0.85) for your field, climate, soil and irrigation method.
Mango must be water-stressed for 2–3 months after the monsoon to induce flowering — do NOT irrigate then. Resume irrigation at fruit set and through fruit development; drip is efficient on the deep-rooted trees.
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 Mango Water Requirement Calculator to turn the FAO-56 crop coefficients for mango into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Mango Water Requirement Calculator
Bearing mango needs 600–900 mm a year, but a deliberate post-monsoon dry spell is essential to trigger flowering. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with mango's own crop coefficients (Kc 0.4 initial, 0.85 mid-season, 0.7 late) across a 360-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 Mango 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 Mango Water Requirement Calculator?
- ✓Uses mango'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 mango need?+
Bearing mango needs 600–900 mm a year, but a deliberate post-monsoon dry spell is essential to trigger flowering. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 360-day growth stages for your conditions.
Should I irrigate mango trees in winter?+
No — withholding water for 2–3 months after the monsoon is what triggers mango flowering. Irrigating then keeps the tree vegetative and flowerless. Resume only after fruit set, then water through fruit growth.
How much water does a mango orchard need?+
About 600–900 mm a year for bearing trees, concentrated from fruit set to harvest. The deep root system and induced-stress flowering mean mango uses far less irrigation than continuously-cropping fruits like banana.
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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