The last two years (fall and spring) I have applied dormant spray a single dwarf mutsu apple tree.
The tree provides lots apples and on the outside all looks fine but w/o fail the inside is this:
What do I need to do differently?
Looks like infested by apple maggots. You can spry, bag each apple or cover branches with row cover.
So I take it that lime sulphur spray that I have applied in the fall and spring for the past 3 years does not combat "apple maggots"?
What spray does one need to combat this pest?
(Remember this is just one tree on residential property)
May I suggest that if you want ready-made answers from previous posts, please google:Garden web forum, apple maggots.
Many old posts will show up for you to read. Most of the times, someone knowledgeable have given answers in those old posts. You'll learn a lot in a short time.
You need to learn not only what to spray, but when. This is a summer pest.