- Associated Press - Thursday, April 14, 2016

SALEM, Ore. (AP) - Officials will soon begin spraying insecticide to keep gypsy moths out of Portland.

The Capital Press reports (https://bit.ly/23In0TZ ) that the Oregon Department of Agriculture will spray three applications by helicopter beginning April 16. The second and third applications will be done in May.

The department plans to spray about 8,800 acres with the insecticide commonly known as Btk, a bacterial species that has been used on gypsy moths in Oregon since 1984. They will cover the St. Johns, Forest Park and Hayden island areas of Portland and will also treat a spot across the Columbia River in Vancouver, Washington.

Gypsy moths are notoriously destructive. There is concern that they will damage Northwest forests and crops like Christmas trees.


Information from: Capital Press, https://www.capitalpress.com/washington

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