Abstract
Incidence of blossom blight and Botrytis fruit rot (BFR), caused by Botrytis cinerea, on two southern highbush blueberry cultivars was evaluated in several blueberry fields grown in the vicinity (BB-Str(+)) or not (BB-Str(-)) of strawberry fields in central Florida. Blossom blight and BFR incidence were higher in BB-Str(+) fields in 2014 and significantly higher in 2015 compared to BB-Str(-) fields. In total, 613 B. cinerea isolates (i.e., 181 and 432 isolates from BB-Str(-) and BB-Str(+) fields, respectively) were collected. The isolates were evaluated for sensitivity to eight single-site and one multisite fungicides using a spore germination and a germ tube elongation assay. Overall, 5, 15, 24, 28, 54, and 93% of isolates collected from BB-Str(-) were resistant to penthiopyrad, cyprodinil, boscalid, fenhexamid, pyraclostrobin, and thiophanate-methyl, respectively. Respective resistance frequencies in BB-Str(+) isolates were 10, 30, 65, 66, 89, and 99%. Resistance frequencies for all fungicides were always higher in BB-Str(+) fields compared to BB-Str(-) fields. Isolates exhibiting resistance to six or five fungicides simultaneously were predominant (50 to 70%) in blueberry fields regardless if they were grown in the vicinity ...Continue Reading
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Citations
Jan 6, 2019·Applied Microbiology and Biotechnology·Roland W S Weber, Matthias Hahn
Feb 20, 2019·Plant Disease·Achour AmiriNatalia A Peres
Sep 19, 2020·Antibiotics·Electine MagoyeFlorian M Freimoser
Aug 5, 2020·Plant Disease·Marcus Vinicius Marin, Natalia A Peres
Feb 4, 2021·Plant Disease·Marcus Vinicius MarinNatalia A Peres
Oct 12, 2021·Plant Disease·Marcus Vinicius Marin, Natalia A Peres
Mar 16, 2021·Plant Disease·Scott David Cosseboom, Mengjun Hu
Mar 4, 2021·Plant Disease·Scott D Cosseboom, Mengjun Hu