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Borers in Picea
Hi:
I have found borers on a Picea (A. Nidiformis ... I think) that a friend brought me a couple of weeks ago !! I have read up all I could about it (including all of Nina's old posts) and there seems to be little I can do to erradicate them. Half of the tree is dead (the other half looks weak) so the bark flakes off easily. There I have found some tunels under the bark. Some of them lead or come from a sort of oval depressions. Some of them are blocked with resin as the tree tried to fight this off. I can only find two probable entry points: one is about 3 mm, the other 1 mm in diameter. In only one tunel I have found evidence of being recent. The question is: Should I forget about this tree? Does the tree have a chance? I know it is hard to say, but what does your experience tell? I don't even know if these "miners" are active or not. Some pictures at : http://es.pg.photos.yahoo.com/ph/ast...bum?.dir=/3d01 I don't know if I should worry much about borers spreading. I live in a countryside where most trees of some age seem to be affected by borers and flat-big headed larvae living beneath bark. Regards, Tony Zone 10a |
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