Capsicum Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of capsicum (bell pepper) (FAO-56 ETc = ET₀ × Kc, peak Kc 1.05) for your field, climate, soil and irrigation method.
Steady drip moisture plus calcium prevents blossom-end rot; capsicum's shallow roots punish both drought and waterlogging. Protect flowering and fruit set above all. Shade-net capsicum needs less water than open field.
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 Capsicum Water Requirement Calculator to turn the FAO-56 crop coefficients for capsicum (bell pepper) into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Capsicum Water Requirement Calculator
Capsicum needs 500–700 mm of carefully even moisture and is prone to blossom-end rot and fruit drop under any water stress. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with capsicum (bell pepper)'s own crop coefficients (Kc 0.6 initial, 1.05 mid-season, 0.9 late) across a 135-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 Capsicum 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 Capsicum Water Requirement Calculator?
- ✓Uses capsicum (bell pepper)'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 capsicum (bell pepper) need?+
Capsicum needs 500–700 mm of carefully even moisture and is prone to blossom-end rot and fruit drop under any water stress. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 135-day growth stages for your conditions.
Why does capsicum get blossom-end rot?+
Like tomato, it is a calcium-transport failure driven by uneven soil moisture. Steady drip irrigation and adequate calcium prevent it far better than spraying calcium onto a fluctuating-moisture crop.
How much water does capsicum need?+
About 500–700 mm over the season, peaking at fruiting. Protected (shade-net/polyhouse) capsicum uses less because of lower evaporative demand; this tool scales to your climate band and method.
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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