Abstract
Large infestations of the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae), reportedly arise from small, spot infestations that expand, multiply, and eventually coalesce (Safranyik et al. 1974). If these spot infestations can be located and eradicated, the development of outbreaks may be delayed, or even precluded. The principal means of eradication of such spots in forests of lodgepole pine, Pinus contorta var. latifolia Engelmann, in British Columbia is single tree disposal (B.C. Ministry of Forests 1987). This may be accomplished by treating with an arsenical herbicide within 3–4 weeks after attack, cutting, bucking, piling, and burning trees before brood emergence, or extraction and processing of brood trees before emergence.
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