Carrot Water Requirement Calculator
Work out the seasonal and per-irrigation water requirement of carrot (FAO-56 ETc = ET₀ × Kc, peak Kc 1.05) for your field, climate, soil and irrigation method.
Even, frequent irrigation keeps roots smooth and sweet — a dry spell then heavy watering cracks them. Keep the bed evenly moist through root development; reduce slightly before harvest to concentrate flavour.
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 Carrot Water Requirement Calculator to turn the FAO-56 crop coefficients for carrot into a real seasonal water volume and an irrigation interval for their own field — no agronomy tables, works offline.
About Carrot Water Requirement Calculator
Carrot needs 350–500 mm of steady moisture; fluctuating water makes roots split, fork and turn woody. This calculator uses the FAO-56 method — crop evapotranspiration ETc = ET₀ × Kc — with carrot's own crop coefficients (Kc 0.7 initial, 1.05 mid-season, 0.9 late) across a 110-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 Carrot 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 Carrot Water Requirement Calculator?
- ✓Uses carrot'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 carrot need?+
Carrot needs 350–500 mm of steady moisture; fluctuating water makes roots split, fork and turn woody. The exact figure depends on climate and season length; this tool sums ET₀ × Kc across the crop's 110-day growth stages for your conditions.
Why do my carrots split?+
Irregular moisture — drought followed by heavy irrigation or rain makes the root take up water fast and crack. Steady, frequent light irrigation through root development prevents splitting.
How much water does carrot need?+
About 350–500 mm over the season for the shallow-rooted crop. Frequent light irrigation suits it; this tool suggests an interval from your soil's water-holding capacity.
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.
Related Agri tools
Tractor Fuel Consumption Calculator
Estimate your tractor's diesel consumption per hour from its horsepower, load and specific fuel consumption.
● LiveTractor Fuel Cost Per Acre Calculator
Convert your tractor's fuel use per hour into diesel litres and cost per acre for any field operation.
● LiveImplement Field Capacity Calculator
Calculate the effective field capacity (ha/h and acres/h) of any implement from width, speed and field efficiency.
● Live