just planted an acre of oats and brassicas.   its my first attempt, next year going to put 4 acres of mixed food plots out and plant 10-20 apple trees

I have not had much luck with apples, but maybe I don't have a resilient cultivar.  My Bartlett pears have done exceptionally well though; huge, healthy, and delicious fruit.  I do not spray for anything, but the trick with the pears is harvesting them when they have reached full size, but before they are fully ripe.  Otherwise, wasps and other insects will get to them.  Apples have been hit or miss; mostly miss.  Can't offer much advice there.

Check out this link for information on fruit trees in Indiana.