Citrus Canker: The Pathogen and Its Impact

Fig. 38. Aerial view of citrus canker eradication methods deployed in Brazil. Circles represent 30-m removal of trees when disease incidence is < 0.05 whereas removal of entire block (center rectangular area) is required when incidence > 0.05.



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