Studies of pesticide residues on strawberries were conducted in 1957, 19.58, 1959, and 1960. It was demonstrated that the berry caps will contain from 28% to 60% of the residue on harvested strawberries. Studies of sewn chlorinated hydrocarbons. nine phosphate insecticides, a carbamate insecticide, and four fungicides showed, with only two exceptions, that sprays applied 24 hours before sampling did not leave residues in excess of established tolerances. Thiodan® (6,7,8,9,10, 10-hexachloro-l,5,5a,6,9,9a-hexa- hydro-6-9 methano-2,4,3-benzodioxathiepin-3-oxide) applied 24 hours before harvest left residues in excess of the tolerance of 2.0 p.p.m.; also, demeton in more than two spray applications, the last applied within 14 days of harvest, left residues in excess of the 0.75 p.p.m. tolerance. Variation of the spray pressure from 30 to 200 p.s.i. did not have an appreciable effect on residue deposits.
Document Type: Research Article
Publication date: April 1, 1962
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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.