Effectiveness of Bifenthrin (Onyx) and Carbaryl (Sevin SL) for Protecting Individual, High-Value Conifers from Bark Beetle Attack (Coleoptera: Curculionidae: Scolytinae) in the Western United States

• DOI: 10.1093/jee/99.5.1691
• Publication Date: 2015-01-13T19:31:32Z
• Authors: Christopher J. Fe...; Kurt K. Allen; Robert R. Borys; John Christopherson; Christopher P. Da...; Thomas J. Eager; Kenneth E. Gibson; Elizabeth G. Hebe...; Daniel F. Long; A. Steven Munson; Patrick J. Shea; Sheri L. Smith; Michael I. Haverty
• Keywords: Dendroctonus; Bifenthrin; Picea engelmannii; Mountain pine beetle; Ambrosia beetle; Abies lasiocarpa

High-value trees, such as those located in residential, recreational, or administrative sites, are particularly susceptible to bark beetle (Coleoptera: Curculionidae: Scolytinae) attack a result of increased amounts stress associated with drought, soil compaction, mechanical injury, vandalism. Tree losses these unique environments generally have substantial impact. The value individual cost removal, and loss esthetics may justify protection until the main thrust infestation subsides. This situation emphasizes need for ensuring that effective insecticides available tree protection. In this study, we assess efficacy bifenthrin (Onyx) carbaryl (Sevin SL) protecting: ponderosa pine, Pinus Dougl. ex. Laws., from western pine beetle, Dendroctonus brevicomis LeConte, California; mountain ponderosae Hopkins South Dakota; Ips spp. Arizona; lodgepole contorta ex Loud., D. Montana; pinyon, edulis Engelm. Colorado monophylla Torr. & Frem. Nevada pinyon ips, confusus (LeConte); Engelmann spruce, Picea engelmannii Parry spruce rufipennis (Kirby) Utah. Few trees were attacked by Arizona study was discontinued. Sevin SL (2.0%) protecting P. ponderosa, contorta, two field seasons. Estimates could not be made during second season due insufficient mortality untreated, baited control trees. Two seasons demonstrated ponderosa/D. 0.06% Onyx. We conclude Onyx is an tool, but repeated annual applications required some systems if multiyear desired.