Farmers are faced with many decisions in managing corn and soybeans as new technologies are introduced, such as drought-tolerant and pest-resistant corn hybrids, new seed treatments, and new methods of pest management. As problems with corn rootworm resistance to Bt corn continue to be found in Iowa, it is important to research methods to manage this pest. It also is important for farmers to adopt tillage practices that not only maximize profits, but also conserve the soil. Planting soybeans at the optimum time is important to maximize yields. The objective of these trials was to investigate what effect various corn and soybean management practices would have on grain yield.