A method of determining the relative toxicity of contact insecticides to Aphis rumicis L. has been devised that may be used in place of the usual spray tests in cases where greater precision is desirable. Nicotine and nicotine sulphate have been used in developing the method and to serve as standards of comparison of the toxicity of other compounds. Toxicity curves have been determined in two ways for each compound, one in which concentration is variable with time of immersion constant, whereas in the other the time of immersion is variable with concentration constant.
Document Type: Research Article
Publication date: August 1, 1931
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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.