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Filtering by: Subject Lodgepole pine -- Diseases and pests -- Montana Creator Lysak, Teresa Degree Field Forest Science

Hazard rating system for spruce weevil (Pissodes strobi) in Sitka spruce in the northern Oregon Coast Range

Creator:

Lysak, Teresa

Abstract:

The spruce weevil (Pissodes strobi) is a serious pest of Sitka spruce in Oregon. Weevils cause damage by killing the leader of a tree, resulting in defects such as crooks and forks that can render the tree unmerchantable. In this study, spruce stands 16-25 years old were surveyed for weevil...

Resource Type:

Masters Thesis

Full Text:

weevil attacks in all cases. In studies with eastern white pine and white spruce, the percent of