This calculator helps agronomists, farmers, and researchers estimate crop evapotranspiration (ETc) for efficient water usage and improved crop yield.
Calculate ETc
Results
Source of Data and Methodology
All calculations are rigorously based on the formulas and data provided by the FAO. View source.
The Formula Explained
\( ET_c = ETo \times K_c \)
Glossary of Variables
- ETc: Crop Evapotranspiration
- ETo: Reference Evapotranspiration
- Kc: Crop Coefficient
Example: Step-by-Step Calculation
For a corn crop with a reference evapotranspiration of 5 mm/day and a crop coefficient of 1.2, ETc is calculated as:
\( ET_c = 5 \times 1.2 = 6 \, \text{mm/day} \)
Frequently Asked Questions (FAQ)
What is crop evapotranspiration?
Crop evapotranspiration (ETc) is the amount of water that evaporates from soil and transpires from plants.
How is ETc calculated?
ETc is calculated using formulas that consider factors like temperature, humidity, and crop type.
Why is ETc important?
Understanding ETc helps optimize water usage and improve crop yield by ensuring crops receive the right amount of water.