Evaluation of Black Cutworm Insecticide Efficacy, 1989

Eight black cutworm soil insecticide treatments were evaluated on a Dufiield silt loam soil in Lancaster County, Pa., during 1989. Six commercially available soil insecticides were used in the test. A randomized complete block design with 4 replications of 9 treatments was used. Granular treatments were applied at planting as a T-band application in 17.8 cm bands over the row using a John Deere Planter. Liquid formulations were applied using a backpack spray system. All treatments were applied on 1 Jun. The corn was planted on 1 Jun in 76.2 cm wide rows at 60,000 plants/ha. Stand counts and number of plants cut were evaluated on 7 and 23 Jun.