Bordeaux mixture as a Control for Leafhoppers

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Tests conducted with home-made Bordeaux: Mixture, 4-4-50 formula and also with three proprietary preparations of this compound, indicate that these spray materials are toxic to the nymphs of at least one common and injurious cicadellid, namely: Empoasca mali Le B. They also are apparently toxic to the nymphs of three other species of leafhoppers, namely: Empoa rosae Linn, Erythroneura comes Say, andE. tricincta Fitch. The young nymphs are more susceptible to the action of the Bordeaux than the older ones, while the adults, although they are repelled from plants sprayed with this preparation, are not affected when forced to feed from treated leaves. Bordeaux mixture should therefore be classed as a specific insecticide for certain species of leafhoppers.

Document Type: Research Article

Publication date: June 1, 1923

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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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