Northeast Research and Demonstration Farm
The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticides, either alone or in combination, for the control of corn rootworm. Evaluation of Bt hybrids included SmartStax, SmartStax with a blended refuge (refuge in the bag), and Herculex XTRA. Soil insecticides evaluated were SmartChoice-SB, Counter-SB, Aztec, and Force.
Iowa State University
Gassmann, Aaron J. and Weber, Patrick J., "Evaluation of Bt and Non-Bt Corn with and without Soil Insecticides for Control of Corn Rootworm" (2012). Iowa State Research Farm Progress Reports. 80.