Temperature Declines During Storms and Irrigation May Contribute to Fire Blight Infection of Pear Fruit

Fig. 2. Map of Orchard 2 showing the source tree for fire blight infections, the location of the irrigation gun on July 22, and the percentage of the total fruit load on 15 monitored trees that had fire blight infections by 10 September.



Image from Plant Health Progress article:
Temperature Declines During Storms and Irrigation May Contribute to Fire Blight Infection of Pear Fruit