The water supply was based on crop evapotranspiration
for both environments. For irrigation scheduling, evapotranspiration of the crop (ETc) was calculated as ETc = ETo × Kc, where
ETo (reference evapotranspiration) was calculated according to
Hargreaves and Samani (1985), and Kc was the crop coefficient
of tomato, as reported by Allen et al. (1998), adjusted for the
environmental conditions