Abstract
Results are given from 13 seasons of studies for control of the green peach aphid, Myzus persicae (Sulz.), on potatoes. Control of the aphid was often achieved initially and effectively with an insecticide, only to be reduced within a few years so that it was superseded by another toxicant. DDT emulsion sprays gave satisfactory control for about 5 years. Parathion gave satisfactory aphid control for about 10 years and was effective for control of other insects infesting potato plants. Toxaphene was effective in many seasons. Thiodan® (6,7,8,9,10,10-hexachloro- 1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide) is currently recommended for control of the aphid.

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