Uso eficiente del agua para el cultivo de rosa cv. Freedom bajo invernadero

AUTOR(ES)

Arévalo-H, John J., Vélez, Javier E., Camacho-Tamayo, Jesús H.

FONTE

Rev. bras. eng. agríc. ambient.

DATA DE PUBLICAÇÃO

2013-08

RESUMO

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 m³ 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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