What is the Kc for turfgrass?

The crop coefficient (Kc) for cool-season turfgrass ranges from 0.6 to 0.8 depending on growth stage and maintenance intensity. Warm-season turf typically uses Kc 0.5–0.7. These values are derived from FAO-56 and University of California cooperative extension research.

How often should turf be irrigated?

Turfgrass benefits from infrequent, deep irrigation rather than daily light watering. Applying water to replace 70–80% of weekly ET in 2–3 applications promotes deep root growth and drought tolerance.

Turf ET Requirement Calculator

Calculate the daily and weekly evapotranspiration-based water requirement for turfgrass areas, supporting smart irrigation controller programming.

Crop Yield Calculator

Crop Type

Area Unit

Area (acres)

Yield (bu/acre)

🌾 Agricultural Disclaimer: Results are estimates based on standard agronomic models. Local soil conditions, climate, variety selection, and management practices significantly affect actual outcomes. Consult local extension services and agronomists before making crop management decisions.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate the daily and weekly evapotranspiration-based water requirement for turfgrass areas, supporting smart irrigation controller programming. Use the turf et requirement result to inform your clinical assessment.

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Turf ET Requirement Calculator

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Frequently Asked Questions

What is the Kc for turfgrass?

How often should turf be irrigated?