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Archytas marmoratus (Diptera: Tachinidae): Screened-cage Performance of Mechanically Extracted Maggots Against Larval Populations of Heliothis zea and Spodoptera frugiperda (Lepidoptera: Noctuidae) on Whorl and Early Tassel-stage Corn

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Abstract:

Mechanically extracted maggots of Archytas marmoratus (Townsend) were evaluated against larva populations of Spodoptera frugiperda (J. E. Smith) and Heliothis zea (Boddie) in whorl and early tassel-stage sweet corn, Zea mays L., grown within 1.8-m3 screened cages. A. marmoratus maggots applied in an aqueous carrier at 5.4, 10.9, and 21.7 per plant against late-instar S. frugiperda reduced subsequent adult emergence by 40.2, 56.6, and 66.5%, respectively. A. marmoratus maggots applied at 5.5, 12.5, and 25.0 per plant against late-instar H. zea reduced subsequent adult emergence by 56.0, 56.9, and 81.9%, respectively. Maggots applied on the soil surface at rates to 25 per 100 cm2 against larvae of S. frugiperda in search of pupation sites had no significant effect on the subsequent emergence of adult moths. Likewise, volumes of aqueous carrier at rates of 0.05–1.25 ml per plant had no effect on the performance of A. marmoratus maggots against H. zea larvae in corn.

Document Type: Research Article

Publication date: December 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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