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Pacific Southwest Research Station |
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Pacific Southwest
Research Station 1731 Research Park Dr. Davis, CA 95618 (530) 759-1700 ![]() |
Publications and Products![]() Research PaperTitle: Log bioassay of residual effectiveness of insecticides against bark beetles Author: Smith, Richard H. Date: 1982 Source: Res. Paper PSW-RP-168. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station; 8 p Station ID: RP-PSW-168 Description: Residual effectiveness of nine insecticides applied to bark was tested against western, mountain, and Jeffrey pine beetles. Ponderosa and Jeffrey pine trees were treated and logs cut from them 2 to 13 months later, and bioassayed with the three beetles. The insecticides were sprayed at the rate of 1 gal (3.8 l) per 40- or 80-ft² (3.6 or 7.2 m²) bark surface at varying concentrations. Effectiveness of treatment was based on reduction in length of egg galleries 2 to 3 weeks after initiating bioassay. All chemicals were quite effective for 2 to 13 months, except for malathion and Imidan which were relatively ineffective, depending largely on concentration and application rate. On the basis of equivalent amounts of lindane, the ranking ofeffectiveness ofinsecticides tested was as follows: (a) on western pine beetle: decamethrin > permethrin > lindane> Reldan > Dursban Key Words: Western pine beetle, mountain pine beetle, Jeffrey pine beetle, lindane, Sevin, Reldan, Dursban, Sumithion, Imidan, malathion, permethrin, decamethrin View and Print this Publication (562 KB) Citation Smith, Richard H. 1982. Log bioassay of residual effectiveness of insecticides against bark beetles Res. Paper PSW-RP-168. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station; 8 p. |
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