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Seedcorn Maggots (Diptera: Anthomyiidae) and Slugs in Conservation Tillage Systems in Ohio

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Seedcorn maggot, Delia platura (Meigen), adults and slugs were sampled from three tillage systems (conventional, reduced, and no tillage). There was a trend for more adult seedcorn maggots to emerge from reduced- and conventional-tillage systems than from the no-tillage system. Previous crop history influenced numbers of adults emerging, with more flies collected when the previous crop was soybeans rather than corn. Soil insecticide (phorate) application increased numbers of seedcorn maggots 1 yr and reduced them 1 yr. Based on data from this study, seedcorn maggots are not likely to be a problem in conservation-tilled fields where only soybean or corn residue is present. Slug populations were highest in no-tillage systems where crop residue cover was greatest and lowest when no residue was present. There was a trend for numbers of slugs to be greater when the previous crop was soybeans; this is thought to be related to either the increased amount of dead, weed biomass present or a preference for decomposing soybean tissue in the no-tillage system. Slug problems are expected to increase as conservation tillage becomes more common because of the residue cover and inclusion of soybeans in no-tillage rotational systems.

Document Type: Research Article

Publication date: June 1, 1987

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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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