Journal
POSTHARVEST BIOLOGY AND TECHNOLOGY
Volume 23, Issue 1, Pages 23-32Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0925-5214(01)00092-8
Keywords
disease control; quiescent infections
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A treatment of hot water brushing and prochloraz followed by 2,4-dichlorophenoxyacetic acid (2,4-D) diluted in wax, reduced postharvest diseases by 50-70% and improved fruit quality during prolonged storage. Alternaria alternata, Phomopsis spp. and Lasiodiplodia spp. were the main causal organisms of stem end decay. The best control was obtained by concentrations of 2,4-D ranging from 75 to 175 mug ml(-1), which could efficiently control side rots caused by A. alternate and the stein end rot-causing pathogens. The combination of hot water brushing, prochloraz application and 2,4-D treatment reduced the incidence of stem end rot after 4 weeks of storage at 14 degreesC and 7 days of shelf life at 20 degreesC from 86 to 10% in cv. Tommy Atkins and from 63 to 12% in cv. Keith. At 175 mug ml(-1) 2,4-D did not affect fruit firmness or colour development but ensured high quality and fewer rotten fruits. (C) 2001 Elsevier Science B.V. All rights reserved.
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