Pear Tree Leaf looks bad

What's wrong with my pear tree leaf
http://tinyurl.com/664xfv
?
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Steve Hammond ha scritto:

I've never seen a pear leaf like this. 8-D Surely, it suffers a nutritional problem.
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Steve Hammond wrote:

Could be a few things. Possibly a fungus. Possibly wind dessication. Gather all leaves this fall and dispose of them. It may be a seasonal thing and the tree will recover next year. You may try a general fungicide next year. Keep the tree well hydrated.
Sherwin
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