What does "RIB" technology in corn hybrids imply regarding refuge requirements?

"RIB" or "Refuge-in-a-Bag" technology in corn hybrids indicates that non-Bt (Bacillus thuringiensis) seed is included within the same bag as the Bt corn seeds. This approach eliminates the need for a separate refuge area, which is traditionally required for insect resistance management. The purpose of RIB technology is to ensure that susceptible insects are present in the field to mate with any Bt-resistant insects, thereby delaying or preventing the development of resistance to Bt traits.

Having non-Bt seeds mixed in the same planting unit means that farmers can plant the seeds without having to set aside a designated area for refuge, simplifying the process and helping facilitate compliance with refuge requirements. This advancement is significant in mitigating the risk of pest resistance in areas where Bt corn is grown, ensuring more effective pest management.

The other options pertain to alternative scenarios surrounding refuge strategies but do not reflect the specific combined approach of RIB technology.