This looks like a follow up question and I do not have a copy of the original question. What kind of product do you want to deliver to your tree? and why?
The original question is: I am asking if there is a substance I can use by adding it to the roots of the apple tree rather than spraying the tree. This would hopefully keep the apples from being buggy. I have a honey gold, a chestnut crab and a honey crisp.
No, a systemic pesticide can't be used on fruit trees because it would taint the fruit.