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. 3. Relief map of southeastern United States showing locations of weather stations and positive and negative Pierce’s disease sites listed in Table 1 and their time of sampling.



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