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