Residues Resulting from Applications of Demeton to Cabbage and Celery1
Authors: WILSON, JOHN W.; MIDDELEM, VAN C. H.
Source: Journal of Economic Entomology, Volume 51, Number 2, April 1958 , pp. 175-178(4)
Publisher: Entomological Society of America
Abstract:The residue data accumulated over a 3-year-period on cabbage treated with demeton at Sanford, Florida, at transplanting time indicate that under some conditions dosages of more than 0.5 pound active demeton per acre may result in residues greater than the established tolerance at harvest time. However, cabbage treated in this manner during the 1955-56 growing season with 0.75, 1.00 and 1.25 pounds active demeton per acre contained residues of less than 0.75 p.p.m. 66 days after the application. Celery treated in a similar manner during the 1955-56 growing season with 1.25 pounds active demeton per acre was found to be carrying residues of 0.72 p.p.m. 100 days after the application. Lower dosages produced proportionately lower residues. Demeton residues in both celery and cabbage which had been sprayed at 21-day intervals with 0.25 pounds active demeton were less than 0.75 p.p.m. 21 days after the last application with the one exception of 0.8 p.p.m. reported by the Pittsburgh Coke and Chemical Company laboratory for the 1954-55 samples of cabbage.
Document Type: Research Article
Publication date: April 1958
- 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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