Title: Residues in Spinach Grown in Disulfoton- and Phorate-Treated Soil1
Abstract: Granular formulations of disulfoton and ph orate, each at 2 Ib actual per acre, gave some control of the green peach aphid, Myzus persicae (Sulzer), on overwintering spinach. Post-planting treatments, beginning December 13. were most effective. Except for preplant treatments of phorate, October 13, significant residues of both insecticides were present in all the treated spinach plants at harvest maturity the following April 28. Residues in the plants consisted of parent compounds, their sulfoxides and sulfones, and the sulfoxides of the oxygen analogs. These declined rather rapidly during May. Resulting residues of both insecticides were lower in summer spinach at harvest maturity than for the winter crop, and the disulfoton tolerance was not exceeded. Phorate is not registered for spinach.
Publication Year: 1968
Publication Date: 1968-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 17
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