If I didnt spray, all 50 of my trees would sink. They barely produce fruit with sprayOnly thing I will spray for is cambium minor attack under the bark and that’s only if I catch it early enough otherwise my fruit trees receive no spray at all. It’s sink or swim for my tree’s.
While I spend an inordinate amount of time with my fruit trees and thoroughly enjoy Every fruit produced - I would advise others in my area to never plant a fruit tree.