Home > XI International Symposium on Irrigation of Horticultural Crops > Estimating actual evapotranspiration and crop coefficients in drip-irrigated hazelnut orchards using the METRIC model

Articles

Estimating actual evapotranspiration and crop coefficients in drip-irrigated hazelnut orchards using the METRIC model

Article number

1468_23

Pages

175 – 182

Language

English

Abstract

Accurate estimation of crop evapotranspiration (ETa) is critical for improving irrigation management and optimizing yield and fruit quality in European hazelnut production, particularly under Mediterranean climate conditions with ongoing water scarcity.
In this context, a study was conducted to validate the METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) model for estimating ETa and crop coefficient (Kc) in a drip-irrigated hazelnut orchard located in the Maule Region of Chile.
Statistical analysis showed that the METRIC model overestimated ETa and Kc values less than 10%, with an index of agreement (d)=0.70. Additionally, the root mean square error (RMSE) and mean absolute error (MAE) for ETa were 0.98 and 0.90 mm day^-1, respectively.
The results demonstrated that the METRIC model can be used as a precision irrigation tool for mapping spatial and temporal variability in water requirements throughout large areas of hazelnut orchards (1,500 ha).

Publication

XI International Symposium on Irrigation of Horticultural Crops

Authors

S. Ortega-Farías, D. de la Fuente-Sáiz, E. Suarez-Huerta, M.J. Lisperguer, S. Ortega-Salazar

Keywords

crop coefficients, evapotranspiration, hazelnut orchard, irrigation

Full text

https://doi.org/10.17660/ActaHortic.2026.1468.23

Groups involved

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