Spring Control of the Hessian Fly (Diptera: Cecidomyiidae) in Winter Wheat Using Insecticides

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A series of field studies was conducted to assessthe feasibility of controlling spring infestations of the Hessian fly, Mayetiola destructor (Say), in winter wheat, Triticum aestivum L. em Theil, using foliarly applied insecticides. Systemic and nonsystemic insecticides were equally effective in 1986, suggesting that insecticides acted by killing ovipositing adults and neonate larvae exposed on the leaf surface. Single applications of disulfoton were not effective in reducing Hessian fly numbers or preventing yield looses when applied after plant spike emergence. Hessian fly numbers were partly reduced in some trials when a single spray was applied during the stem elongation stage of plant development and 1-2 wk before peak deposition of Hessian fly eggs. Repeated applications (four to six sprays) reduced spring infestations and prevented lossesof grain yield if spraying began during stem elongation and before peak egg deposition. Gain threshold calculations indicated that the yield response to repeated insecticide applications justified up to three treatments of disulfoton. However, because of inconsistent efficacy, marginal economic benefit, and difficulty of predicting Hessian fly ovipositional activity, management of spring infestations of the Hessian fly using foliarly applied insecticides is not currently feasible.

Document Type: Research Article

Publication date: December 1, 1991

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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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