A journal article published recently (July 2014) confirms that rotation-resistant and rotation-susceptible western corn rootworms are affected by Bt root tissue in a similar fashion.

Syngenta announced today that the Environmental Protection Agency (EPA) has approved the Agrisure Duracade 5122, E-Z Refuge and Agrisure Duracade 5222, E-Z Refuge trait stacks. These single-bag refuge products will provide growers with unmatched corn rootworm protection plus a convenient 5 percent integrated refuge.