In trials conducted in Maine from 1958 through 1962,glyodin has exhibited an acaricidal effect on the European red mite, Panonychus ulmi (Koch). The use of various fungicides in seasonal programs, from which all insecticides but lead arsenate were excluded, resulted in substantially lower mite populations in glyodin-treated plots, in four out of five years, as compared with those in which captan dodine (n-duodeeylguanidine), Niacide A or M, and thiram were used. In the test orchard, the almost complete lack of mites and insects predatory on P. ulmi makes it unlikely that these natural control agents were responsible for the reduction in numbers of phytophagous mites observed in the glyodin treatments. Indications arc that frequent applications of the fungicide are necessary to effect an appreciable reduction in the total European red mite population.
Document Type: Research Article
Publication date: June 1, 1963
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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.