Not all fields are alike, so there are various refuge configurations you can follow. Whichever you choose, it is important to ensure that your refuge is planted at the same time as your Bt fields and that you select refuge hybrids that are similar in maturity (within 100-150 CHU), disease resistance, herbicide tolerance, standability and other traits as your Bt hybrids. This will work to your advantage during weed control and at harvest time, as well as ensure that the moths are attracted equally to both your non-Bt and Bt fields.
Choose which type of Bt corn you are planting to see possible refuge planting schemes:
ECB Bt Corn Only (ie. Agrisure CB/LL, Agrisure GT/CB/LL, Agrisure Viptera 3110, Herculex 1, YieldGard CB)
CRW Bt Corn Only (ie. Agrisure RW, Agrisure GT/RW, Herculex RW, YieldGard VT Rootworm)
Stacked ECB/CRW Bt Corn (ie. Agrisure CB/LL/RW, Agrisure 3000GT, Agrisure Viptera 3111, Genuity VT Triple Pro, Herculex XTRA, Optimum Intrasect Xtra, YieldGard VT Triple)
Hybrids with Multiple Traits for ECB Control (ie. Agrisure Viptera 3220, Genuity VT Double Pro and Optimum Intrasect Insect Protection)
Hybrids with Multiple Traits for ECB and CRW Control (ie. Agrisure Viptera 3122, Genuity SmartStax, Optimum Intrasect Xtreme, SmartStax)
Refuge Included Hybrid Options (ie. Agrisure Viptera 3220, Agrisure Viptera 3122, Genuity SmartStax, Genuity VT Double Pro, Optimum AcreMax, Optimum AcreMax Xtreme, SmartStax)