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

Fig. 7. Progression of Pierce’s disease in a block of Cabernet Franc at Rockhouse Vineyard, NC in 2001, 2006, and 2007.



Image from Plant Health Progress article:
The Effect of Warming Winter Temperatures on the Severity of Pierce's Disease in the Appalachian Mountains and Piedmont of the Southeastern United States