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The Effect of Warming Winter Temperatures on the Severity of Pierce’s Disease in the Appalachian Mountains and Piedmont of the Southeastern United States

O. Anas, U. J. Harrison, P. M. Brannen, and T. B. Sutton

July 2008


Pierce’s disease (PD) is a major threat to the French-American hybrid winegrape industry in the southeastern US. The goal of this research was to conduct surveys to confirm the presence of PD in newly planted vineyards in the Piedmont and Mountain regions of North Carolina and Georgia, and to relate the presence of PD to winter temperatures within the regions. The study also identifies and maps low, moderate, and high-risk areas for PD in the Southeast.


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