The challenges posed by soybean aphid resistance to pyrethroid insecticides have resulted in more growers turning to insecticides containing chlorpyrifos for management of soybean aphid outbreaks. Chlorpyrifos is an organophosphate insecticide with broad-spectrum activity that is used for management of pests in various agricultural crops. Chlorpyrifos is an active ingredient in various products, including but not limited to Lorsban, Cobalt, Dursban, Nufos and Yuma.
