Basic studies on the consumptive use of water required for dry field crops, 1; tomato and Chinese cabbage.
1988
Kim C.K. | Choi H.K.
The purpose of this study is to find out the basic data for irrigation plans of tomato and Chinese cabbage during the growing period, such as total amount of evapotranspiration, coefficients of evapotranspiration at each growth stage, the peak stage of evapotranspiration, the maximum evapotranspiration, optimum irrigation point, total readily available moisture and intervals of irrigation date. The plots of experiment were arranged with split plot design which were composed of two factors, irrigation point for main plot and soil texture for split plot, and three levels, irrigation points with PF 1.8, PF 2.2, PF 2.6, for tomato and those with PF 1.9, PF 2.3, PF 2.7, for Chinese cabbage, soil textures of silty clay, sandy loam and sandy soil for both tomato and Chinese cabbage, with two replications. There was the highest significant correlation between the evapotranspiration and the pan evaporation, beyond all other meteorological factors considered. Therefore, the pan evaporation is enough to be used as a meteorological index measuring the quantity of evapotranspiration. 1/10 probability values of maximum total pan evaporation during growing period for tomato and Chinese cabbage were shown as 355.8mm and 233.0 mm, respectively, and those of maximum ten day pan evaporation for tomato and Chinese cabbage, 68.0 mm and 43.8 mm, respectively. The time that annual maximum of ten day pan evaporation can occur, exists at any stage of growing period for tomato, and at any growth stage till late September for Chinese cabbage.
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