Northern Research and Demonstration Farm
Transgenic seedcorn hybrids, that contain a gene from the naturally occurring soil bacterium Bacillus thuringiensis (Bt), were evaluated for their ability to protect corn-root systems from corn rootworm feeding injury. Force 3G was used as an insecticide treatment in several of the tests.
Iowa State University
Oleson, James and Tollefson, Jonathan, "Transgenic Seedcorn Evaluated for Corn Rootworm Management" (2007). Iowa State Research Farm Progress Reports. 942.