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Dear All, Sept 23, 2006
Further to a previous post--
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Hi Brian, Richard & All, Sept 19, 2004
This is probably unrelated, apart from involvement of the same tree
species, but numerous White Birch in the Kentville area are now affected
by a dieback that starts in the tops/branch ends and works
downward/inward over several years. From the progression of symptoms I
suspect it is caused by xylem blockage by fungi or bacteria that gained
a toe-hold by invading roots killed by water stress in a series of dry
summers.
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--and following two summers of adequate or ample rainfall (2005 & 2006),
many of the Birch trees that were in serious decline by 2004 are in
recovery mode. This is consistent with dry summers being a major cause
of the previous decline.
Yours truly, Dave Webster, Kentville
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