Effects of bagging on the occurrence of black stain on the skin of 'Shinsyu' persimmon (Diospyros kaki L.) grown under film

The effects of bagging on the occurrence of black stain (BS) on fruit skin of 'Shinsyu' persimmon (Diospyros kaki L.) grown under a transparent film w ere investigated. All fruits of each tree were covered with paper bags on 1 7 September (the beginning stage of coloration), and all fruits of bagged a nd non-bagged trees were harvested on 22 and 27 October, respectively. The time required for bagging one fruit was about 21 seconds. Bagging significa ntly decreased the occurrence of BS and increased the ratios of BS-free fru it in two harvest dates by 4 to 7 times over the non-bagged ones. Bagging d id not affect yield per tree, average fruit weight, fruit colour, flesh fir mness, and total soluble solid content in two harvest dates. Suitable baggi ng dates for the prevention of BS are from 50 to 35 days before harvest.