Pineapple Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of pineapple (FAO-56 ETc = ET₀ × Kc, peak Kc 0.4) for your field, climate, soil and irrigation method.
Pineapple uses water efficiently (CAM photosynthesis, low Kc) but responds to irrigation in dry spells for fruit size. Avoid waterlogging, which rots the shallow roots. Drip suits the dense planting.
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 Pineapple Water Requirement Calculator to turn the FAO-56 crop coefficients for pineapple into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Pineapple Water Requirement Calculator
Pineapple is a CAM plant needing only 700–1000 mm over its long cycle — remarkably water-efficient for its biomass. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with pineapple's own crop coefficients (Kc 0.5 initial, 0.4 mid-season, 0.3 late) across a 420-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 Pineapple 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 Pineapple Water Requirement Calculator?
- ✓Uses pineapple'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 pineapple need?+
Pineapple is a CAM plant needing only 700–1000 mm over its long cycle — remarkably water-efficient for its biomass. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 420-day growth stages for your conditions.
Why does pineapple need relatively little water?+
Pineapple uses CAM photosynthesis — taking up CO₂ at night with stomata closed by day — so it transpires little and has a low crop coefficient, making it unusually water-efficient.
How much water does pineapple need?+
About 700–1000 mm over its 14–18 month cycle. Supplementary drip irrigation in dry spells improves fruit size, but the crop tolerates drought far better than most fruits.
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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