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Filtering by: Subject Douglas fir -- Diseases and pests -- Washington (State), Western Creator Dewey, Jerald E.

Protecting Douglas-fir cones and foliage with a systemic insecticide

Creator:

Stipe, Lawrence E., Dewey, Jerald E., and United States. Forest Service. Northern Region

Abstract:

Trees in a Douglas-fir stand infested with western spruce budworm were treated with a systemic insecticide to protect cone and seed production at three locations in Montana during 1983. Treatments applied were (1) acephate as an Acecap implant, (2) acephate as an Inject-A-Cide injection, and (3) control. Potential cone-bearing trees...

Resource Type:

Technical Report