Wild Apple Tree Question - Disease or Blight?

[Natty Bumppo]

Got a question about a handful of wild apples on my property that show some kind of black disease, fungus, blight? Hoping somebody can recommend a course of action.

These trees were growing in the shade of the competing forest for the past 25 years or so. I release many of them about 4 years ago, and now they are growing in full sun with no competition. The 2008 ice storm in the Northeast also damaged many of them. They are showing some kind of chalky, black disease. The limbs on which the black occurs also appear to be not very vigorous.

Can anybody tell me what this is, if it's harmful, and what I should do about it?

Thanks in advance.

 

[SmallChunk]

I can't see the photo's, but I'm interested in what the responses will be. I have had the same thing happen to a few of my trees

 

[aerospacefarmer]

Maybe sun scald but shoot could be FB or some other disease. Looks ugly

 

[SmallChunk]

I can see the photo now, exactly what is happening to me!

 

[Rally1148]

I've got lots of that on my old wild trees. I think it might be black rot, since it's not spreading like FB would.