Coeficiente de cultura e relações hídricas do cafeeiro, cultivar catucaí, sob dois sistemas de manejo da irrigação
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Data
2007-09
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Editor
João Batista Duarte
Resumo
The objective of this study was to determine the crop
coefficient (kc), diffusion resistance and leaf water potential of
coffee, Catucaí cultivar, in blooming and grain formation phases,
submitted to two irrigation system management. The coffee
evapotranspiration was determined by soil water balance, and
crop evapotranspiration was assessed by Penman-Monteith
(FAO-56) method. The irrigation application times were
determined in two management systems: based on the percentage
wetted area (P), and based on the location coefficient (Kl). The
results allowed to conclude that the irrigation management using
the location coefficient provided an increase of the irrigation
application time, and, consequently, increasing the irrigation depth
and the crop coefficient values, which reached the mean of 1.12.
For the management system based on the percentage wetted
area, the mean value of the crop coefficient, in the appraised
period, was 1.06. The mean diffusion resistance and leaf water
potential were lower when the management system was adopted
with base in Kl, which provided an increase of the transpiration
and, consequently, of kc.
Descrição
Palavras-chave
Evapotranspiração, Resistência difusiva, Potencial hídrico foliar, Evapotranspiration, Diffusion resistance, Leaf water potential
Citação
OLIVEIRA, Luiz Fernando Coutinho de; OLIVEIRA, Ruth Zago; BORGES, Lucas Bernardes; WEHR, Tiago Roberto; BONOMO, Robson. Coeficiente de cultura e relações hídricas do cafeeiro, cultivar catucaí, sob dois sistemas de manejo da irrigação. Pesquisa Agropecuária Tropical, Goiânia, v. 37, n. 3, p. 154-162, jul./set. 2007. Disponível em: <https://www.revistas.ufg.br/pat/article/view/1855/1761>.