Spruce Beetle : Mortality from Solar Heat in Cull Logs of Engelmann Spruce

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Solar treatment of naturally infested spruce cull logs in clearcuts gave 90% or greater mortality of Dendroctonus rufipennis (Kirby), on the top surface of turned logs, but it did not significantly increase mortality on their sides. Solar treatment was most effective if the logs were turned by July or earlier. Orientation of the turned logs did not influence overall mortality. Inner bark temperatures of 120°F for 30 minutes caused 92% beetle mortality in the laboratory. Shade, log orientation, and position in the cutting area should be considered before turning infested logs or using this technique as a control method.

Document Type: Research Article

Publication date: April 16, 1973

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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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