Relative Efficacy and Refuge Requirements of Selected, Commercially Available Bt Corn Products

Traits / BrandsCorn borersCutwormCorn earwormFall armywormWestern corn rootworm
Agrisure GT/CB/LL, Agrisure Artesian *ExcellentPoorFairFairNone
Agrisure 3011 GT *ExcellentPoorFairFairGood
Agrisure Viptera 3110 **ExcellentGoodExcellentExcellentNone
Agrisure Viptera 3111 **ExcellentGoodExcellentExcellentGood
Genuity VT Triple Pro (GENVT3P) **ExcellentPoorGoodVery GoodExcellent
Genuity VT Double Pro (GENVT2P) ***ExcellentPoorGoodVery GoodNone
Genuity SmartStax or SmartStax (GENSS or SSX) ***ExcellentGoodGoodVery GoodExcellent
Herculex I (HX1 or HR) *ExcellentGoodPoorGoodNone
Optimum Intrasect (YHR) ***ExcellentGoodFairVery GoodNone
Optimum Intrasect Xtra (YXR) **ExcellentGoodFairVery GoodExcellent
Optimum Intrasect XTreme ***ExcellentGoodFairVery GoodExcellent
Optimum Leptra (VYHR) ***ExcellentGoodExcellentExcellentNone
Optimum TRIsect *ExcellentGoodPoorGoodExcellent
Genuity Trecepta *ExcellentGoodExcellentExcellentNone
YieldGard Corn Borer (YGCB) *ExcellentPoorFairFairNone
YieldGard VT Triple (VT3) *ExcellentPoorFairFairExcellent
Below are RIB Systems (Non-Bt Refuge Seed Included in Each Bag of Seed), For Non-Cotton Growing Areas Only *
Agrisure Viptera 3220 ****ExcellentGoodExcellentExcellentNone
Agrisure Viptera 3122 ****ExcellentGoodExcellentExcellentExcellent
Genuity VT Double Pro RIB (GENVT2P RIB) ****ExcellentPoorGoodVery GoodNone
Genuity SmartStax or SmartStax RIB (GENSS or SSX) ****ExcellentGoodGoodVery GoodExcellent
Optimum AcreMax ****ExcellentGoodFairVery GoodNone
Optimum AcreMax Xtra *****ExcellentGoodFairVery GoodExcellent
Optimum AcreMax XTreme ****ExcellentGoodFairVery GoodExcellent
PowerCore ****ExcellentGoodGoodVery GoodNone
Genuity Trecepta RIB ****ExcellentGoodExcellentExcellentNone

150% and 20% non-Bt corn refuge requirement in cotton and corn areas, respectively.
220% non-Bt corn refuge is required in cotton and corn areas.
3 20% and 5% refuge requirement in cotton and corn areas, respectively.
45% refuge in bag system in non-cotton areas; a separate 20% non-Bt refuge is required in cotton growing areas.