A new issue of Scaffolds for the week of 7/23 has been posted and is available
at:
http://www.scaffolds.entomology.cornell.edu/2018/SCAFFOLDS-7-23-18.pdf
A version compatible with mobile devices is available at:
http://www.scaffolds.entomology.cornell.edu/2018/SCAFFOLDSMD-7-23-18.pdf
This
Phytophthora is what I thought when I saw those pictures, although I’ve also
had fireblight infect susceptible rootstocks with similar appearance. I had
big problems with Phytophthora in my orchard in Tennessee. Particularly in wet
years. It also got better when we stopped using overhead
I’m not sure if this fire blight or Phytophthora – this problem and the
pictures look very familiar to what I’ve been observing the last 5 years in PA
(this is my frame of reference since I started in 2013).
Another pathogen to keep in mind that is often linked to this sort of mystery
tree
