When I get a strike I act quickly. This was a strike I got 2 days ago June 6th 2018 that was quickly starting to run back down the tree. The biggest mistake anyone can make is trying to save that fruit! The second you see the strike in a fruit cluster even if it’s your only fruit cluster it must be amputated. Please don’t ask me how I figured that out!
I’ve posted plenty about these topics in the last several years Late season Fireblight & Pear tree Fireblight research so you dont have to
Temperature and rainfall totals are factors but it’s mostly about varities