Citrus Canker: The Pathogen and Its Impact

Fig. 46. Results of the 1900-ft regulation for eradication of citrus canker in Dade and Broward counties of Florida. Red circles depict areas of 1900-ft radius surrounding a citrus canker-diseased tree, within which citrus trees are defined as exposed.



Image from Plant Health Progress article:
Citrus Canker: The Pathogen and Its Impact