Deposit Structure Effects on Insecticide Bioassays
Authors: Ebert, T. A.; Hall, F. R.
Source: Journal of Economic Entomology, Volume 92, Number 5, October 1999 , pp. 1007-1013(7)
Publisher: Entomological Society of America
Abstract:Agricultural application of pesticides is often done by atomization of the active ingredient and a carrier fluid. This atomized fluid lands on a plant surface and creates a mosaic of treated and untreated patches that we define as deposit structure. This structure influences the biological effect of the pesticide if dose per unit time is a factor in determining the overall toxicity of the pesticide. Laboratory bioassays are frequently carried out in such a way as to eliminate all effects of deposit structure. This bioassay methodology dictates the form of the observed dose–response relationship in these experiments. Although our observations do not invalidate previous bioassay methodology, they do suggest that current approaches provide a narrow view of dose–response relationships. These results affect bioassay methodology for testing toxicant efficacy and for experiments with insecticide resistance that use similar approaches to screen for resistance or study inheritance of pesticide resistance.
Document Type: Research Article
Publication date: October 1, 1999
- 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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