Question
Hi my apple tress, granny smith and peach seem to get leave that turn br, black and take over the whole leaf and most of the plant.

it looks like a bad potato chip?

Please, I have sprayed a few drops of melathiaon in a gallor water and later with sevin dust. to no awail

Answer
Bruce:

I was a bit unclear with your description.  Are just your apple trees affected with the problem or peaches also have the same issue?  Do the leaves on the branch ends turn color first? Can you send me a photo of a small section of the tree that has the discolored leaves?  A photo may help with an idea.

Regards
Steve