Corn, Fall Armyworm Control, 1977

In a field test at Charlotte Court House, Virginia, five insecticides were tested to determine their efficacy in controlling fall armyworm on conventionally tilled corn. Furadan 10G, Dyfonate 20G, and Dyfonate I0GK were applied with a cyclone seeder to large non-replicated plots (0.1 m x 44.2m). Penncap-M and two concentrations of Lorsban 4E were applied with a 11.4 litre hand compressed air sprayer calibrated at the rate of 87.1 litre per acre at 25-30 psi. Three replications of each treatment were applied to .9 m x 44.2 m plots per replicate in a randomized block design. Evaluations of treatments were made 48 hr after application by counting the number of live fall armyworms from the center 10.1 m row of each replicate. Percent control was calculated on untreated checks. All insecticides were compared to controls witbin the design.