Two methods were used to measure the repellency of 60 pesticides to the adults of 2 hymenopterous parasites and 2 coccinellids. Method I, for screening general reaction to each of the residues, was based on the number of excrement spots deposited over a 4-day period on sugar cubes sprayed with the 60 pesticides. Method II measured the insects' initial avoidance of noxious odors or irritants from their preferential movement to treated or untreated sectors of a filter paper. Many of the pesticides tested were weak repellents: none was strongly avoided. Zectran® (4-dimethylamino-3,5-xylyl methylcarbamate) and DN-111 (4,6-dinitro - o - cyclohexylphenol, N,N - dicyclohexylamine salt) were most generally avoided; other pesticides were either more specific or elicited weak aversion responses. Parasites and predators responded to the noxious odors of certain residues, the strongest aversion (23.8%) being that of a parasite to Aramite® (2- (p-teri-butylphenoxy) isopropyl-2-chloroethyl sulfite).
Document Type: Research Article
Publication date: April 1, 1965
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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.