Refuge-in-a-bag, refuge in 2 bags, reduced refuge are all terms being used this fall about different Bt corn hybrids. If you are confused by all of the information, like me, there is an excellent resource that breaks down the latest information, and refuge requirements for the various Bt events.
Dr. Ric Bessin, Extension Entomologist, has updated Bt-corn for Corn Borer Control (ENTFACT 118),
