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Control of blue mold ( Penicillium expansum ) by fludioxonil in apples (cv Empire) under controlled atmosphere and cold storage conditions
Author(s) -
Errampalli Deena,
Northover John,
Skog Lisa,
Brubacher Nichole R,
Collucci Cheryl A
Publication year - 2005
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.1010
Subject(s) - fludioxonil , blue mold , penicillium expansum , fungicide , cold storage , horticulture , mold , inoculation , penicillium , chemistry , biology , botany , postharvest
A reduced risk fungicide, fludioxonil, was tested for its efficacy against blue mold caused by thiabendazole‐resistant and ‐sensitive Penicillium expansum (Link) Thom in apples under three storage conditions. In a co‐treatment, fludioxonil and inoculum were applied together to test the protective activity of the fungicide on wounds that had been aged for 1 or 2 days. The fungicide was also tested for its curative activity in post‐inoculation treatment on apples that had been inoculated for 1 or 2 days. Fludioxonil was very effective as co‐treatment and as post‐inoculation treatment. At a concentration of 300 mg litre −1 , fludioxonil gave complete control of post‐harvest blue mold caused by the thiabendazole‐resistant and ‐sensitive P expansum for 105 days in controlled atmosphere (CA) storage at 2 (±1) °C, for 42 days in common cold storage at 4 (±1) °C and also in a shelf‐life study for 6 days at 20 (±1) °C. Comparison on the effect of fludioxonil in CA storage and common cold storage showed that higher concentrations of fungicide were needed in cold storage than in CA storage. Fludioxonil at a concentration of 450 mg litre −1 , gave 98 and 92% control of blue mold of apples in the simulated shelf‐life studies after CA and common cold storages, respectively. Fludioxonil has a potential to be incorporated in the fungicide resistance management strategies for control of blue mold in apples stored for 105 days. Copyright © 2005 Society of Chemical Industry