Feeding Deterrent Effects of Synthetic Pyrethroids on the Fall Armyworm, Spodoptera frugiperda

Nine synthetic pyrethroids were tested in the laboratory for feeding deterrency to 3rd instar fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). In no-choice tests all pyrethroids were effective feeding deterrents at 50 ppm. At 5 ppm all but Pounce@? were significant deterrents.