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Systemic Action of Neem Seed Extract on Mountain Pine Beetle (Coleoptera: Scolytidae) in Lodgepole Pine

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A botanical insecticide derived from seeds of the neem tree, Azadirachta Indica A. Juss, was tested for the "bait and kill" strategy for control of outbreaks of the mountain pine beetle, Dendroctonus ponderosae Hopkins. Application of neem into frills at the base of beetle-attacked lodgepole pine, Pinus contorta Douglas var. latifolia Engelmann, trees reduced numbers of mountain pine beetle larvae per unit area of bark, decreased densities of larvae per unit length of adult gallery, and increased larval mortality when applied at doses >0.25 g (AI) (azadirachtin) per tree. Suggestions for improving the efficacy of neem treatments are discussed.

Document Type: Research Article

Publication date: December 1, 1994

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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