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Carbaryl Prevents Attacks on Lodgepole Pine by the Mountain Pine Beetle

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A pilot project was conducted during 1977 on the Targhee National Forest, Idaho, to test the effectiveness of carbaryl insecticide in preventing attacks by the mountain pine beetle (Dendroctonus ponderosae) in lodgepole pine (Pinus contorta). For comparison, lindane was applied to alternate blocks of trees. The insecticides were applied as water-based sprays using hand-held spray apparatus. Carbaryl was applied at 2.0 percent, and lindane at 1.3 percent. Success of each chemical was based on comparisons between treated trees and adjacent untreated ones. Carbaryl was 100-percent effective while lindane was only 45-percent effective. Follow-up evaluations after beetle flight in 1978 and 1979 showed a single treatment of carbaryl was 98.4-percent effective in preventing beetle attacks after a second season but only 66.6-percent effective following a third season. In stands of high-value trees, carbaryl can be a safe, economical, and highly efficient way to protect individual trees.

Document Type: Journal Article

Affiliations: An Entomologist, Forest Pest Management, U.S. Forest Service, Albuquerque, NM.

Publication date: February 1, 1985

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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