Field experiments were conducted to determine the efficacy of current Bt traits in maize (Zea mays L.) hybrids and soil-applied insecticide for corn rootworm (Diabrotica spp.) management. Experiments were conducted as a randomized complete block design with a split-plot arrangement. The whole plot was no insecticide or soil-applied insecticide. The subplots were different Bt maize hybrids and treatments: non-Bt (untreated control), seed-applied insecticide, Cry3Bb1, Cry34/35Ab1, and Cry3Bb1 + Cry34/35Ab1. Root injury was evaluated using the Iowa State University rating system. Hybrids expressing any Cry protein averaged 0.12 nodes pruned. Hybrids without Cry proteins averaged 0.37 nodes pruned. Seed-applied insecticide reduced root pruning compared to the untreated control. Both had greater root injury than hybrids with Cry proteins. Soil-applied insecticide did not always reduce root pruning. Hybrid yield and test weight were highly variable, depending on the hybrid’s genetics. This research indicates the Bt-traits tested are effective in managing corn rootworm.