Abstract
ABSTRACT A blueberry field in Bladen County, NC was examined biweekly or monthly for the first 3 yr to determine conditions associated with high plant mortality in young bushes. Plants grew profusely, did not become completely dormant, and 139 of 500 bushes were cold-injured at first frost in November 1992. Cold-injured stems (ca. 10-30 cm in length) developed a characteristic dead, hook-shaped tip which persisted throughout the following growing season. In 1993, the incidence of B. dothidea in stems injured by cold the previous November was 19%, 39%, and 88% for March, May, and June, respectively. Widespread infection by B. dothidea following cold injury could account for past observations of field epidemics 1 -2 yr after planting.
Published Version
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