Insecticide efficacy trials on stink bug in Georgia cotton
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Efficacy trials were conducted from 2005 to 2010 utilizing various insecticides and rates to determine their impact on stink bug infestations in cotton. Stink bug populations vary by year, but since the transition to transgenic Bt cotton their presence has negatively impacted cotton yield and grade. Efficacy trials were conducted in commercial cotton fields planted adjacent to peanuts. Stink bug populations are traditionally higher in cotton nearest the peanut planting compared with more interior areas of fields. A high clearance plot sprayer was used to apply various insecticides on the four rows adjacent to the peanut planting. Stink bugs were counted by life stage and species 3 days after treatment. Pyrethriods and OPs provided good to excellent control of southern green stink bugs. However, organophosphates such as Bidrin provided improved control of brown stink bug species.