Abstract Performance of liquid and granule formulations of permethrin were evaluated against artificial ECB infestations at the University of Minnesota, St. Paul, MN. Plots measured 1 row × 9.14 m were established in corn planted 6 Jun. The middle 15 plants of each plot received 3 egg masses per plant during the late whorl stage, 1 on 18 Jul and 2 on 19 Jul. Treatments included a factorial combination of three application strategies (Ambush 2 E Broadcast, Ambush 2 E Band, and Pounce 1.5 G Band) and 4 application rates (0.056, 0.112, 0.168 and 0.224 kg(AI)/ha) plus an untreated check. Treatments were arranged in a randomized complete block design with 4 reps. Granules were applied on 22 Jul pm using a 1-row Gandy° granular applicator. Liquids were applied on 23 Jul am with a CO2-powered back pack sprayer calibrated to deliver 187 liters/ha. Broadcast treatments were applied with 8002 nozzles on a 38 cm spacing while banded treatments were applied over the row with 8004 nozzles on a 76 cm spacing. Efficacy was evaluated on 27 Aug by dissecting the 15 infested plants and counting the number of larvae and tunnels. Data were analyzed with a GLM because of a missing value. Means were separated by 2-sample t-tests.