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Trichogramma nubilale (Hymenoptera: Trichogrammatidae) Field Releases in Corn and a Hypothetical Model for Control of European Corn Borer (Lepidoptera: Pyralidae)

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Maximum emergence of Trichogramma nubilale Ertle and Davis was obtained from parasitized European corn borer (ECB), Ostrinia nubilalis (Hübner), eggs that were laboratory incubated for a minimum of 7 days before placement in field-release containers. A release rate of 300 females per day per 0.3719 ha resulted in 40% parasitism of first-brood ECB egg masses. It is calculated that a release rate of ca. 2,400 and 12,000 females per day per ha would be needed to achieve 80% parasitism (i.e., control) of first and second brood, respectively. A hypothetical T. nubilale release model for control of ECB in corn is presented that incorporates changes (i.e., increases) in release rates relative to increases in the parasitoid searching area, namely, leaf surface.

Document Type: Research Article

Publication date: February 1, 1984

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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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