Relative Efficacy and Refuge Requirements of Selected, Commercially Available Bt Corn Products
Traits / Brands Corn borers Cutworm Corn earworm Fall armyworm Western corn rootworm
Agrisure GT/CB/LL, Agrisure Artesian * Excellent Poor Fair Fair None
Agrisure 3011 GT * Excellent Poor Fair Fair Good
Agrisure Viptera 3110 ** Excellent Good Excellent Excellent None
Agrisure Viptera 3111 ** Excellent Good Excellent Excellent Good
Genuity VT Triple Pro (GENVT3P) ** Excellent Poor Good Very Good Excellent
Genuity VT Double Pro (GENVT2P) *** Excellent Poor Good Very Good None
Genuity SmartStax or SmartStax (GENSS or SSX) *** Excellent Good Good Very Good Excellent
Herculex I (HX1 or HR) * Excellent Good Poor Good None
Optimum Intrasect (YHR) *** Excellent Good Fair Very Good None
Optimum Intrasect Xtra (YXR) ** Excellent Good Fair Very Good Excellent
Optimum Intrasect XTreme *** Excellent Good Fair Very Good Excellent
Optimum Leptra (VYHR) *** Excellent Good Excellent Excellent None
Optimum TRIsect * Excellent Good Poor Good Excellent
Genuity Trecepta * Excellent Good Excellent Excellent None
YieldGard Corn Borer (YGCB) * Excellent Poor Fair Fair None
YieldGard VT Triple (VT3) * Excellent Poor Fair Fair Excellent
Below are RIB Systems (Non-Bt Refuge Seed Included in Each Bag of Seed), For Non-Cotton Growing Areas Only *
Agrisure Viptera 3220 **** Excellent Good Excellent Excellent None
Agrisure Viptera 3122 **** Excellent Good Excellent Excellent Excellent
Genuity VT Double Pro RIB (GENVT2P RIB) **** Excellent Poor Good Very Good None
Genuity SmartStax or SmartStax RIB (GENSS or SSX) **** Excellent Good Good Very Good Excellent
Optimum AcreMax **** Excellent Good Fair Very Good None
Optimum AcreMax Xtra ***** Excellent Good Fair Very Good Excellent
Optimum AcreMax XTreme **** Excellent Good Fair Very Good Excellent
PowerCore **** Excellent Good Good Very Good None
Genuity Trecepta RIB **** Excellent Good Excellent Excellent None
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.