Sapota Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of sapota (chiku) (FAO-56 ETc = ET₀ × Kc, peak Kc 0.9) for your field, climate, soil and irrigation method.
Sapota crops continuously, so it needs steady moisture all year; drip basin irrigation suits the deep-rooted evergreen. Avoid prolonged stress, which drops developing fruit.
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 Sapota Water Requirement Calculator to turn the FAO-56 crop coefficients for sapota (chiku) into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Sapota Water Requirement Calculator
Evergreen sapota fruits year-round and needs 800–1200 mm of fairly steady water across its continuous cropping. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with sapota (chiku)'s own crop coefficients (Kc 0.6 initial, 0.9 mid-season, 0.8 late) across a 365-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 Sapota 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 Sapota Water Requirement Calculator?
- ✓Uses sapota (chiku)'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 sapota (chiku) need?+
Evergreen sapota fruits year-round and needs 800–1200 mm of fairly steady water across its continuous cropping. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 365-day growth stages for your conditions.
How much water does sapota need?+
About 800–1200 mm a year because the evergreen fruits more or less continuously. Steady drip or basin irrigation through the year sustains the multiple overlapping crops.
Does sapota need a dry rest like mango?+
No — unlike mango, sapota crops continuously and is kept evenly moist year-round; prolonged stress drops developing fruit rather than inducing a flush.
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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