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Category: General News
Tussock moth infestation found in Blues
WALLA WALLA, Wash. (AP) - The state has discovered a new
infestation of Douglas-fir tussock moths in the Blue Mountains of
Washington and Oregon.
Light defoliation was mapped across 9,000 acres of the Umatilla
National Forest, with most of that in Washington. Most of the
defoliation occurred in the Wenaha-Tucannon Wilderness Area, but it
may spread and increase in severity this year.
Officials say another tussock moth outbreak that affected 1,600
acres in eastern Spokane County in 2011 will likely end this year.
The defoliation can reduce growth, cause top-kill, and may make
some trees vulnerable to attack by bark beetles.