In mineral loam soils of Prince Edward Island, a single preplanting application of fensulfothion was sufficiently persistent to give good to excellent control of root maggots attacking rutabagas throughout the growing season during 13 of the past 15 years. However, during two abnormally wet growing seasons (1977 and 1979), this compound gave little or no control. Bioassays indicated that toxic residues disappeared more quickly from field treated soil during these wet growing seasons, but that higher levels of toxicants were absorbed by rutabagas grown in the treated soil. Chemical residue analyses of soil and of carrots and rutabagas grown in microplots, where lateral movement of insecticide and plant development was restricted, showed that total residues of fensulfothion and fensulfothion sulfone were ca. 2.5, 8.5, and 20 times higher in the soil, carrots, and rutabagas, respectively, during the relatively dry growing season of 1978 than during the abnormally wet season of 1979.
Document Type: Research Article
Publication date: June 1, 1981
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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.