Effectiveness of Permethrin Plus-C (Masterline) and Carbaryl (Sevin SL) for Protecting Individual, High-Value Pines (Pinus) From Bark Beetle Attack

摘要: Bark beetles (Coleoptera: Scolytidae) are commonly recognized as the most important mortality agent in western North American coniferous forests. High-value trees such those located residential, recreational, or administrative sites particularly susceptible to attack. Regardless of landowner objectives, tree losses these unique environments generally have a catastrophic impact. The value individual trees, cost removal, and loss aesthetics may justify protection until main thrust bark beetle infestation subsides. This situation emphasizes need for assuring that effective insecticides available protection. In this study, we assessed efficacy permethrin plus-C (Masterline) carbaryl (Sevin SL) protecting ponderosa, Pinus ponderosa Dougl. ex. Laws., lodgepole, P. contorta ex Loud., pinyon, edulis Engelm., pines from attack during two field seasons. Masterline was mountain pine beetle, Dendroctonus ponderosae Hopkins, one season. However, Sevin SL efficacious An insufficient number control were killed make definitive conclusions regarding systems. data reported here is first published report on its effectiveness preventing standing trees. appears be an tool, but repeated applications will necessary if multiyear desired.