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, Ruth Ben Arie

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Black-spot symptoms, caused by Alternaria alternata, develop in 'Triumph' persimmon fruit during prolonged storage at - 1°C. 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 μg 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 - 1°C, 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.

Original languageEnglish (US)
Pages (from-to)271-277
Number of pages7
JournalPostharvest Biology and Technology
Volume22
Issue number3
DOIs
StatePublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Food Science
  • Agronomy and Crop Science
  • Horticulture

Keywords

  • Blackspot disease
  • Postharvest diseases
  • Quiescent infection

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