I was going through my bookmarks deleting those that no longer draw up the informative articles they used to. I found this one that I haven’t looked at for a while.
http://www.nysipm.cornell.edu/organic_guide/apples.pdf
I wish we had an organized library of these types of growers guides and other free on-line info of superior quality, but that would be a huge project. I’m not volunteering- suggesting is so much easier.