Postharvest chlorine treatments for the control of the persimmon black spot disease caused by Alternaria alternata
Dov Prusky, Dani Eshel, Ilana Kobiler, Nir Yakoby, Delila Beno-Moualem, Miriam Ackerman, Yohanan Zuthji and Ruth Ben Arie
Postharvest Biology and Technology. Volume 22, Number 3, 2001. Pages 271-277.
2001
บทคัดย่อ
Black-spot symptoms, caused by Alternaria alternata, develop in
`Triumph' persimmon fruit during prolonged storage at -1oC.
Preharvest dip treatment in the organic chlorine compound Troclosene sodium
extended the storage life of the fruit by delaying development of black-spot
disease (BSD). Troclosene sodium was more stable and efficient for the control
of A. alternata than calcium hypochlorite. At 500 
g
ml-1 Troclosene sodium significantly reduced the development of BSD
in persimmon fruit sampled in 15 orchards in different growing regions of
Israel. Following commercial dipping and storage at -1oC, the
percentage of marketable fruit after 4 months of storage was 15¯40%
higher than in untreated fruit. Present results suggest that the BSD can be
controlled by a simple dip treatment with chlorine disinfectant.