High Temperature Alone and Combined with Controlled Atmospheres for Control of Diapausing Codling Moth (Lepidoptera: Tortricidae) in Walnuts

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High temperature alone and combined with controlled atmospheres were effective in killing diapausing codling moth larvae, Cydia pomonella (L.). Larvae were exposed to atmospheres of air, 0.5% oxygen (O2) in nitrogen (N2), 0.5% O2 + 10% carbon dioxide (C O2) in N2, or to 98% CO2 in air, at temperatures of 39, 41, 43, or 45 and 60% RH. LT95s were estimated for each atmosphere-temperature combination and fit to an asymptotic mathematical model to describe the effect of temperature. Higher temperature caused a more rapid kill. The decreasing order of effectiveness was 98% CO2, the two 0.5% O2 atmospheres, which were intermediate in effectiveness and not substantially different from each other, and air.

Document Type: Research Article

Publication date: February 1, 1996

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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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