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PP198: Botrytis Blossom Blight of Southern Highbush Blueberry

Figure 2. Gray sporulation of Botrytis cinerea is observed on corolla and calyx of southern highbush blueberry flowers after an extended period of high relative humidity. Corollas do not typically senesce and turn brown on the plant but are usually dropped after pollination while still white. Brown corollas that remain on the bush and gray sporulation are good diagnostic symptoms of Botrytis blossom blight.