On 30/03/2012 22:25, Bob Hobden wrote:
"DonGiovanni" wrote

I Have a Conference Pear tree that has some sort of silvery-grey fungal
infection. Some branches have died back, but there is still some
blossom on others. Does anybody recognise what it is, or what
fungicides or sprays can treat it?

Thanks in advance for any help.


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Looks like Lichens to me.




Yes, Bob, I agree. I think they're beautiful and am always glad to see
them. I certainly don't think they're the cause of die-back on the OP's
tree. They are generally believed to be a sign of good air quality.

To the OP, I do think cutting out the dead branches is the first task,
taking care not to damage the blossom. I got the impression that the
tree may not be in its first flush of youth, so it's not extraordinary
that there's some minor limb loss. Check that there are no crossing
branches causing chafing wounds, which might let in disease. After some
minor tree surgery, feed and water it to help it recover.

If, whilst, removing the dead wood, you find any other problem, do come
back and let us know.

--
Spider
from high ground in SE London
gardening on clay