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Observacoes iniciais da perda de água por interceptacao de chuva em cacaueiro

by Miranda, R.A.C. de.
Publisher: 1985Subject(s): THEOBROMA CACAO | LLUVIA | BALANCE HIDRICO | RELACIONES PLANTA AGUA | THEOBROMA CACAO | RAIN | WATER BALANCE | PLANT WATER RELATIONS | THEOBROMA CACAO | PLUIE | BILAN HYDRIQUE | RELATION PLANTE EAU In: Revista Theobroma (Brasil) v. 15(2) p. 73-78Summary: A micrometeorological research program is being developed to establish the seasonal percentage of rain intercepted by the cacao canopy and consequently to determine the water balance which governs the exchange of rain between the cacao tree and its environment. The experiment is being carried out at the Cacao Research Center (14 grade 45'S and 39 grade 14'W), Ilhéus, Bahia, Brazil. Ten rain gauges were fixed on masts at 80 cm above the cacao canopy and 12 plastic gauges were placed under the canopy in two lines at right angles to each other and at distances of 30, 90 and 150 cm from the trunk to determine the water balance. An aluminum collector system was attached to 15 cacao trunks to measure the stemflow. The preliminary results indicate that a mean of 15 percent of incident rainfall is intercepted by the cacao canopy, about 83 percent reaches the soil as throughfall while 2 percent as stemflow.
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A micrometeorological research program is being developed to establish the seasonal percentage of rain intercepted by the cacao canopy and consequently to determine the water balance which governs the exchange of rain between the cacao tree and its environment. The experiment is being carried out at the Cacao Research Center (14 grade 45'S and 39 grade 14'W), Ilhéus, Bahia, Brazil. Ten rain gauges were fixed on masts at 80 cm above the cacao canopy and 12 plastic gauges were placed under the canopy in two lines at right angles to each other and at distances of 30, 90 and 150 cm from the trunk to determine the water balance. An aluminum collector system was attached to 15 cacao trunks to measure the stemflow. The preliminary results indicate that a mean of 15 percent of incident rainfall is intercepted by the cacao canopy, about 83 percent reaches the soil as throughfall while 2 percent as stemflow.

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