Aerial Application of the Pyrethroid Deltamethrin for Grasshopper (Orthoptera: Acrididae) Control
Authors: Johnson, D. L.; Hill, B. D.; Hinks, C. F.; Schaalje, G. B.
Source: Journal of Economic Entomology, Volume 79, Number 1, February 1986 , pp. 181-188(8)
Publisher: Entomological Society of America
Abstract:Field trials were conducted to determine deposition of deltamethrin applied to pastures by aircraft, and resulting effectiveness in controlling grasshoppers. Residue analysis indicated that 73% of 7.2 g (AI)/ha deltamethrin applied was deposited on vegetation and litter. Sampling via sweep net indicated considerably higher rates of control than did estimates of density based on trap catches 1 day after application, although both methods indicated a 65% reduction in grasshopper density after 4 days. The bias in sweep-net samples is due to reduced activity just after spraying. Contrary to earlier reports, efficacy of deltamethrin was unrelated to age distribution, species composition, or grasshopper movement. Estimates of mortality based on independent toxicological experiments in the laboratory agreed with field results, given the deposition measured at time of spraying.
Document Type: Research Article
Publication date: February 1986
- 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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