John Hartman, University of Kentucky, Bugwood.org
Where this disease was present the previous year, we suggest the following management program:
We do not recommend cutting out blighted shoots after terminal growth has stopped. When growth stops, the spread of fire blight should also stop. The most important thing to do to control fire blight during the summer is to control sucking insects like aphids and leafhoppers. Applying streptomycin sprays within 24 hours after hail to prevent new infections is also a good practice.
Proper fertilization practices can help reduce the potential for fire blight. Trees that are excessively vigorous due to high nitrogen applications can be more prone to fire blight. Variety selection also can help reduce the incidence of this disease. Many of the scab-resistant varieties are resistant to fire blight (see Table 4.1). Varieties such as Jonathan and Rome Beauty are more susceptible to fire blight. Resistant pear varieties include Magness and Moonglow.