Dona Ana County is one of the largest producers of pecans in the nation, making this area one of the most significant pecan production regions in the world. However, it is facing a shortage of water due to prolonged drought in the region. Management of water to grow crops, including pecan, is crucial to sustaining the agricultural industry in the region. This study assesses the evapotranspiration (ET) of a flood-irrigated young pecan orchard planted in 2021 in the Valley. This orchard has a partial canopy cover of pecan and pasture as a cover crop above the soil. In this orchard, ET was measured using an eddy covariance system and calculated as a residual using the energy budget method. Results indicate that ET primarily varies between 2.5 and 5.5 mm/day from June to August in the years 2021 and 2022.
