Handy Bt Trait Table Field Crops Entomology Program MSU Insect targets BCW black cutworm CEW corn earworm CRW corn rootworm ECB European corn borer FAW fall armyworm SB stalk borer WBC western bean cutworm More corn hybrids contain multiple transgenic traits, and cost of this seed is steadily rising -$300 or more per bag is not uncommon. Meanwhile, refuge requirements are changing for multi-trait corn. Some refuges remain 20% and ‘structured’, planted in a block or series of rows. Others are reduced to 5% or 10%, in a block or ‘in the bag’ mixed with the Bt seed itself. Different products from different seed companies now have different refuges Purchasing the right transgenic hybrid for the right pest, and planting it with the correct refuge in the proper location, is critical to maximizing income. But this process is increasingly confusing.The table on the second page of this handout summarizes, to the best of our ability, the currently available traits and their spectrum of control. The table also lists refuge amounts and location. Herbicide traits GT glyphosate tolerant LL Liberty Link or glufosinate tolerant RR2 Roundup Ready 2 (glyphosate tolerant) Pictures: Iowa State Image Gallery (Marlin Rice) and Chris DiFonzo Current April 2011 Btprotein (s) Insects controlled (bold) or suppressed (italics) Above-ground-----------In soil Herbicide tolerant? Refuge %,location In the MIDWEST Agrisure products Agrisure CB/LL Cry1Ab ECB CEW FAWSB --- LL 20% -½ mile Agrisure GT/CB/LL Cry1Ab ECB CEW FAWSB --- GTLL 20% -½ mile Agrisure RW mCry3A --- CRW --- 20% -adjacent Agrisure GT/RW mCry3A --- CRW GT 20% -adjacent Agrisure CB/LL/RW Cry1AbmCry3A ECBCEWFAWSB CRW LL 20% -adjacent Agrisure 3000GT Cry1Ab mCry3A ECBCEWFAWSB CRW GTLL 20% -adjacent Agrisure Viptera 3110 Cry1AbVip3A BCWCEW ECB FAW WBCSB --- GTLL 20% -½ mile Agrisure Viptera 3111 Cry1AbmCry3A Vip3A BCWCEW ECB FAW WBCSB CRW GTLL 20% -adjacent Agrisure Viptera 3220 Cry1AbCry1F Vip3A BCWCEW ECB FAW WBCSB --- GT LL 5% -½mile Herculex products Herculex1 (HX1) Cry1F BCWECBFAWWBC CEW --- LL RR2 (some) 20% -½ mile HerculexRW (HXRW) Cry34/35Ab1 --- CRW LL 20% -adjacent HerculexXTRA (HXX) Cry1FCry34/35Ab1 BCWECBFAWWBC CEW CRW LL RR2 (some) 20% -adjacent Optimum products Optimum Intrasect Cry1F Cry1Ab BCWECBFAWWBC CEW --- LLRR2 5% -½ mile Optimum AcreMaxRW Cry34/35Ab1 --- CRW RR2 10% in the bag Optimum AcreMax1 (AM1) Cry1FCry34/35Ab1 BCWECBFAWWBC CEW CRW LLRR2 10% in the bag (CRW) &20% -½ mile (ECB) YieldGardproducts YGCB Cry1Ab ECBCEWFAW SB --- RR2(some) 20% -½ mile YGRW Cry3Bb1 --- CRW RR2(some) 20% -adjacent YieldGard Plus Cry1AbCry3Bb1 ECBCEWFAW SB CRW RR2(some) 20% -adjacent YieldGardVTRW Cry3Bb1 --- CRW RR2 20% -adjacent YieldGardVT Triple Cry1AbCry3Bb1 ECBCEWFAW SB CRW RR2 20% -adjacent Genuity /SmartStax products Genuity VT Double Pro(VT2P) Cry1A.105Cry2Ab2 CEWECBFAW --- RR2 5% -½ mile Genuity VT Triple Pro(VT3P) Cry1A.105 Cry2Ab2 Cry3Bb1 CEWECBFAW CRW RR2 20% -adjacent SmartStax (Dow) or Genuity SmartStax (Monsanto) (GENSS) Cry1A.105Cry2Ab2 Cry1F Cry3Bb1 Cry34/35Ab1 BCWCEW ECBFAWWBC CRW LLRR2 5% -adjacent GenuitySmartStax RIB Complete (Mon) Same as GENSS Same as GENSS LLRR2 For2012 5% in the bag REFUGE ADVANCED Powered by SmartStax (Dow) Same as GENSS Same as GENSS LLRR2 For2012 5% in the bag A structured 5% refuge option will be available