Abstract
Abstract The trial was established in a commercial sunflower field near Ada, Minn. Plots were 4 rows × 25 ft, replicated 4 times, and arranged in a randomized complete block design. The low concentrations of insecticide applied were obtained by serial dilution using clean containers. No additional sticker or emulsifiers were used. Application was with a handheld C02 sprayer at 40 psi, using 17 gal/acre of total material. Pretreatment and posttreatment counts were taken on the same 10 plants in each plot. Percent reduction was calculated and treated statistically as indicated in the table.
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