cherry tree bark/insect damage
Thanks in advance for any help. I have a 4 y/o Montmorency sour cherry tree which this spring has developed a large vertical split in the bark. It is on the SW side, so at first I suspected sun scald (the trunk of the tree is fairly protected from sun by nearby growth, but the crown gets sun about all day), but I am not sure as it appears there may be some borer at work, too, judging from some apparent frass on the injury site. A photo is available here: http://henbogle.blogspot.com/2007/06/yikes-what-is-this-on-my-cherry-tree.html
I've looked around online and have called my cooperative extension with no definitive answer yet.
What caused the injury(ies) and can it be treated, and if so, how?
THANKS!! This is the first year the tree has set fruit and it is killing me to think of losing it now.
I've also posted this question in Garden Pests.