RESUMENDeterminar el requerimiento de agua y el momento adecuado de distribución, es un factor fundamental para el cultivo de flores. El objetivo del presente trabajo fue determinar el efecto de la aplicación de tres láminas de riego sobre el desarrollo y producción del cultivo de la Rosa cv. Freedom, bajo invernadero. El experimento se realizó con tres láminas de riego en un cultivo de rosa (Rosa spp.) cv. Freedom. Se analizó el crecimiento de los tallos florales, la vida en florero, la producción y la eficiencia en el uso del agua. Los tratamientos se basaron en tres niveles de evapotranspiración de cultivo (ETc) (70, 80 y 100%). Durante el estudio, el cultivo se mantuvo en producción constante. Se aplicaron 384,87, 254,25 y 218,97 m 3 correspondiente a 100, 80 e 70% de ETc respectivamente, significando un ahorro de agua de 14,0 y 21,8% en el 80 e 70% de ETc respectivamente. El coeficiente de cultivo (Kc) vario entre 0,58 y 1,65, con una media de 1,13. No se encontraron diferencias en la producción. Las curvas de crecimiento presentaron incremento continuo, con ajuste al modelo logístico. El 70% de ETc presentó la mayor eficiencia en el uso del agua, con 185 tallos m -3 . La conservación media de los tallos florales fue de 12 a 15 días. La mayor causa de pérdida fue la deshidratación, que inició en el día 11, comportamiento normal del tallo floral.Palabras-clave: evapotranspiración, curva de crecimiento, manejo del agua, riego deficitario Efficient use of water for rose crop cv. Freedom in greenhouse ABSTRACT To determine the water requirements and timing of distribution is a key factor for growing flowers. The aim of this study was to determine the effect of applying three levels of water on the development and yield of rose cv. Freedom, under greenhouse conditions. The experiment was conducted with three levels of water in rose crop (Rosa spp.) cv. Freedom. The analyzed variables were: growth of flowering stems, vase life, yield and efficiency in water use. The treatments were based on three levels of crop evapotranspiration (ETc) (70, 80 and 100%). During the study, the crop yield was constant. The volume of water applied was 384.87, 254.25 and 218.97 m 3 corresponding to ETc -100, 80 and 70%, respectively, meaning a water savings of 14.6 and 21.8% in the ETc -80 and 70%, respectively. The crop coefficient (Kc) varied between 0.58 and 1.65, with a mean value of 1.13. There were no differences in yield. The growth curves showed a continuous increase, adjusted to a logistic model. The treatment of ETc -70% had the highest efficiency in water use, with 185 stems m -3 . The mean conservation of flower stalks was 12 to 15 days. The major cause of elimination was dehydration, but this started on day 11, a normal behavior of the floral stem.
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