Guava Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of guava (FAO-56 ETc = ET₀ × Kc, peak Kc 0.85) for your field, climate, soil and irrigation method.
Withhold water to rest the tree for bahar, then irrigate to flush flowering for the quality winter crop; water steadily 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 Guava Water Requirement Calculator to turn the FAO-56 crop coefficients for guava into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Guava Water Requirement Calculator
Bearing guava needs 600–800 mm a year, with controlled stress used in the bahar system to time the winter crop. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with guava's own crop coefficients (Kc 0.5 initial, 0.85 mid-season, 0.7 late) across a 330-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 Guava 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 Guava Water Requirement Calculator?
- ✓Uses guava'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 guava need?+
Bearing guava needs 600–800 mm a year, with controlled stress used in the bahar system to time the winter crop. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 330-day growth stages for your conditions.
How does irrigation control guava cropping?+
Withholding water stresses the tree (bahar treatment); resuming irrigation triggers a synchronised flowering flush. Timing this steers the crop to the prized winter season.
How much water does guava need?+
About 600–800 mm a year for bearing trees, concentrated through fruit development. Induced-stress flowering keeps total irrigation moderate.
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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