We examined the efficacy of maize hybrids containing Cry1Ab and Vip3a proteins for controlling black cutworm (BCW), Agrotis ipsilon (Hufnagel) in 2003 and 2004. The same hybrids were also examined for controlling fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) in 2004. For BCW, we infested with three BCW larvae (2 late third instar and 1 early fourth instar) per plant using individual plant barriers in a field environment. In 2003 BCW study, the hybrids containing Vip3a proteins had 0 to 5.0% cutting compared to 72.5% cutting in non-transgenic near isoline controls and 77.5% cutting for a hybrid containing the Cry1Ab protein alone. Similar results were observed in a 2004 BCW trial. Data for FAW will be added as it becomes available. Results from our trial indicate that hybrids containing Vip3a proteins are capable of withstanding intense BCW pressure as compared to unprotected controls.