Evaluation of Hydraulically Applied Baculovirus Preparations to Control Western Spruce Budworm (Lepidoptera: Tortricidae) on Grand Fir

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Effectiveness of hydraulic applications of two baculovirus preparations (NPV and GV) apphed at three dosage levels and two timings (peak second and third instar and peak third and fourth instar) was evaluated against western spruce budworm Choristoneura occidentalis Freeman, on grand fir. Abies grandis (Dougl. ex D. Don) Lindl. After spraying larval populations were reduced to less than 1.5 larvae per branch, and were significantly lower than on untreated control trees. Differences in control between the two virus types and three dosage levels were not significant. Virus treatments provided 35% protection of current foliage.

Document Type: Research Article

Publication date: October 1, 1985

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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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