So what does “Resistance” mean? Does it mean the tree is less likely to catch the problem it has resistance to in the first place, or does it mean the tree is able to fight off the problem once it happens?
For example, my Williams’ Pride apple looks like it has little fire blight singes on all the leaves that it grew about two weeks ago, but all the new leaves look unaffected. I don’t want to cut off all the fire blight strikes because that would mean cutting the young tree limbs back to little stumps.
Same goes it CAR. The older leaves of my Golden Delicious and Gold Rush apples are covered with those spots and look a little yellow, but the trees continue to grow vigorously and there doesn’t seem to be any problem on any new leaves. Does this mean in future years there is a possibility the trees will work past CAR and still produce?