Re: no more apples please
I think I have heard of sprays, but can't give any specifics. You might try blasting all the blossoms with a garden hose and destroy them. I love apples, but finally cut our trees down because getting nice apples is so much work, and it is so cheap and easy to buy nice ones.
Re: no more apples please
After much research (one phone call to a local nursery lol) I found my answer. There is a spray that can be used and its called florel.
Here's an educating link on florel
http://www.montereylawngarden.com/info/florel.html