Pre-emergence insecticide applications for control of the mountain pine beetle, <i>Dendroctonus ponderosae</i> (Coleoptera: Scolytidae)
Keywords:
mountain pine beetle, <i>Dendroctonus ponderosae</i>, Coleoptera, ScolytidaeAbstract
An experiment was set up near Princeton, British Columbia, to investigate the efficacy of carbaryl (Sevin SL) and chlorpyrifos and (Dursban 4E) at 1% and 2% a.i. in water, to prevent the successful emergence of mountain pine beetles, <i>Dendroctonus ponderosae</i> Hopkins, from infested lodgepole pines, <i>Pinus contorta</i> var. <i>latifolia</i> Engelmann. All treatments were effective in killing the emerging beetles outright. Mortality ranged from 83.3% for 1% Sevin to 94.9% for 2% Dursban, compared with 6.1% mortality of beetles emerging from water-treated control trees. Living emergent beetles from all treatments suffered >50 and >90% mortality after 1 and 5 days, respectively, compared with 5 and 10 days, respectively, for beetles from control treatments.
References
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