抄録
The leaf color of netted Melon plant was periodically measured using the color computer during its maturing stage. The color difference between the green upper leaf and the lower closest leaf to the fruit was measured. The upper leaves remained the same color, but the lower leaves turned their color. The daily course of the sugar concentration was measured.
The result showed that the color difference indicated the optimum harvest time of the fruits and the increased sugar concentration of the fruits.
