Trade Name |
Bt Protein(s) 1st Line = Above Ground 2nd Line = Below Ground |
# of Bt Proteins Providing Protection (See Resistance Table Below) |
Herbicide Tolerance |
Refuge % & Location |
|||||||||||
Above Ground |
Below Ground |
||||||||||||||
BCW |
CEW |
ECB |
FAW |
TAW |
WBC |
CRW |
LL |
GT |
RR2 |
Enlist |
|||||
Agrisure® CB/LL |
Cry1Ab |
0 |
0 - 1 |
1 |
0 |
0 |
0 |
0 |
X |
|
|
|
20% - 400 m |
||
Agrisure® GT/CB/LL Agrisure® 3010 |
Cry1Ab |
0 |
0 - 1 |
1 |
0 |
0 |
0 |
0 |
X |
X |
|
|
20% - 400 m |
||
Agrisure® 3000GT |
Cry1Ab mCry3A |
0 |
0 - 1 |
1 |
0 |
0 |
0 |
0 - 1 |
X |
X |
|
|
20% - adjacent |
||
Agrisure® 3120 E-Z Refuge® |
Cry1Ab Cry1F |
1 |
0 - 1 |
1 - 2 |
0 - 1 |
0 |
0 |
0 |
|
X |
|
|
5% IR |
||
Agrisure® 3122 E-Z Refuge® |
Cry1Ab Cry1F mCry3A Cry34/Cry35Ab1 |
1 |
0 - 1 |
1 - 2 |
0 - 1 |
0 |
0 |
0 - 2 |
|
X |
|
|
5% IR
|
||
Agrisure Viptera® 3110 |
Cry1Ab Vip3A |
1 |
1 - 2 |
1 |
1 |
1 |
1 |
0 |
X |
X |
|
|
20% - 400 m |
||
Agrisure Viptera® 3111 |
Cry1Ab Vip3A |
1 |
1 - 2 |
1 |
1 |
1 |
1 |
0 - 1 |
X |
X |
|
|
20% - adjacent |
||
Agrisure Viptera® 3220 E-Z Refuge® |
Cry1Ab Cry1F Vip3A
|
2 |
1 - 2 |
1 - 2 |
1 - 2 |
1 |
1 |
0 |
|
X |
|
|
5% IR |
||
Agrisure Viptera® 3330 E-Z Refuge® |
Cry1Ab, Vip3A, Cry1A.105/Cry2Ab2 |
1 | 1 - 4 | 3 | 3 | 1 | 1 | 0 | X | X | 5% IR | ||||
Agrisure Duracade® 5122 E-Z Refuge® |
Cry1Ab Vip3A |
1 |
1 - 2 |
1 - 2 |
1 - 2 |
0 |
0 |
0 - 2 |
X |
X |
|
|
5% IR |
||
Agrisure Duracade® 5222 E-Z Refuge® |
Cry1Ab Cry1F Vip3A |
2 |
1 - 3 |
1 - 2 |
1 - 3 |
1 |
1 |
0 - 2 |
X |
X |
|
|
5% IR |
||
Genuity® VT Triple PRO® |
Cry1A.105/Cry2Ab2 Cry3Bb1 |
0 |
0 - 2 |
2 |
2 |
0 |
0 |
0 - 1 |
|
|
X |
|
10% IR |
||
Optimum® AcreMax® |
Cry1Ab Cry1F |
1 |
0 - 1 |
1 - 2 |
0 - 1 |
0 |
0 |
0 |
X |
|
X |
|
5% IR |
||
Optimum® AcreMax® Leptra® |
Cry1Ab Cry1F Vip3A |
2 | 1- 2 | 1 - 2 | 1 - 2 | 1 | 1 | 0 | X | X | 5% IR | ||||
Optimum® AcreMax® XTreme |
Cry1Ab Cry1F Cry34/Cry35Ab1 mCry3A |
1 |
0 - 1 |
1 - 2 |
0 - 1 |
0 |
0 |
0 - 2 |
X |
|
X |
|
5% IR |
||
Optimum® Intrasect® |
Cry1Ab Cry1F |
1 |
0 - 1 |
1 - 2 |
0 - 1 |
1 |
0 |
0 |
X |
|
X |
|
5% - 400 m |
||
PowerCore ™ |
Cry1F Cry1A.105/Cry2Ab2 |
1 | 0 - 2 | 2 - 3 | 2 - 3 | 0 | 0 | 0 | X | X | 5% IR | ||||
PowerCore™ Enlist™ |
Cry 1F Cry1A.105/Cry2Ab2 |
1 | 0 - 2 | 2 - 3 | 2 - 3 | 0 | 0 | 0 | X | X | X | 5% IR | |||
Qrome |
Cry1Ab Cry1F Cry34/Cry35Ab1 mCry3A |
1 | 0 - 1 | 1 - 2 | 0 - 1 | 0 | 0 | 0 - 2 | X | X | 5% IR | ||||
SmartStax® (Bayer) |
Cry1F Cry1A.105/Cry2Ab2 Cry3Bb1 Cry34/Cry35Ab1 |
1 | 0 - 2 | 2 - 3 | 2 - 3 | 0 | 0 | 0 - 2 | X | X |
5% adjacent or 5% IR |
||||
SmartStax® Enlist™ |
Cry1F Cry1A.105/Cry2Ab2 Cry3Bb1 Cry34/Cry35Ab1 |
1 | 0 - 2 | 2 - 3 | 2 - 3 | 0 | 0 | 0 - 2 | X | X | X | 5% IR | |||
SmartStax® Refuge Advanced (Corteva™) |
Cry1F Cry1A.105/Cry2Ab2 Cry3Bb1 Cry34/ Cry35Ab1 |
1 | 0 - 2 | 2 - 3 | 2 - 3 | 0 | 0 | 0 - 2 | X | X |
5% adjacent or 5% IR |
||||
Trecepta® |
Vip3A Cry1A.105/Cry2Ab2 |
1 | 1 - 3 | 2 | 3 | 1 | 1 | 0 | X | 5% IR | |||||
VT Double PRO® | Cry1A.105/Cry2Ab2 | 0 | 0 - 2 | 2 | 2 | 0 | 0 | 0 | X | 5% IR | |||||
SWEET CORN PRODUCTS | |||||||||||||||
Attribute II Series (Syngenta) |
Cry1Ab Vip3A |
1 | 0 - 1 | 1 | 1 | 1 | 1 | 0 | X | No refuge required if stubble destroyed within 30 days | |||||
Performance Series | Cry1A.105/Cry2Ab2 Cry3Bb1 | 0 | 0 - 2 | 2 | 2 | 0 | 0 | 0 - 1 | X | No refuge required if stubble destroyed within 30 days |
# of Bt Proteins: Where ranges are given under each pest, the protein may no longer be effective for the pest listed. See
table titled “Resistance Status of Bt Proteins for Each Target Pest” for more information on known resistance cases.
Always try to select hybrids with more than one effective Bt protein against your target pest.
IR = refers to Integrated Refuge, where refuge hybrid seed has been pre-mixed with Bt hybrid seed in the bag.
Note: Herbicide tolerances listed are for the non-Integrated Refuge products. IR products may have different herbicide
tolerances and herbicide selection should be based on the properties of the refuge hybrid.
Field corn trade names and their 'events' (gene transformations)
Trade Name | Event | Bt Protein(s) expressed |
---|---|---|
Agrisure CB/LL | Bt 11 | Cry1Ab |
Agrisure Duracade | 5307 | eCry3.1Ab |
Agrisure RW | MIR604 | mCry3A |
Agrisure Viptera | MIR162 | Vip3Aa20 (Vip3A) |
Herculex I (HXI) | TC1507 | Cry1F |
Herculex CRW | DAS-59122-7 | Cry34/35Ab1 |
None- part of Qrome | DP-4114 | Cry1F + Cry34/35Ab1 |
Yieldgard Corn Borer | MON810 | Cry1Ab |
Yieldgard Rootworm | MON863 | Cry3Bb1 |
Yieldgard VT Pro | MON89034 | Cry1A.105/Cry2Ab2 |
Yieldgard VT Rootworm | MON88017 | Cry3Bb1 |
Abbreviations used in the table
Target Insect | |
---|---|
BCW | Black cutworm |
CEW | Corn earworm |
ECB | European corn borer |
FAW | Fall Armyworm |
TAW | True Armyworm |
WBC | Western bean cutworm |
CRW | Corn rootworm |
Herbicide Tolerance Trait | |
LL | Liberty Link/Glufosinate tolerant |
GT | Glyphosate tolerant |
RR2 | Roundup Ready® /Glyphosate tolerant |
ENLIST | 2,4-D, FOPS |
Resistance Status of Bt Proteins for Each Target Pest
Target Pest |
Effective Bt Proteins * = see next column |
Bt Proteins of Known Resistance (widespread or local) |
Bt Proteins that Never Worked on the Pest |
---|---|---|---|
Black cutworm (BCW) |
Cry1F Vip3A |
None |
Cry1Ab Cry1A.105 X Cry2Ab2 |
Corn earworm (CEW) | Vip3A |
Cry1Ab in US and Ontario Cry1A.105 x Cry1Ab2 in US and Ontario |
Cry1F |
European corn borer (ECB) |
Cry1Ab Cry1A.105 x Cry2Ab2 Cry1F (except the Maritimes)* |
Cry1F in Maritimes |
Vip3A |
Fall armyworm (FAW) |
Cry1F* Cry1A.105 x Cry2Ab2 |
Cry1F in southern US |
Cry1Ab Vip3A |
True armyworm (TAW) | Vip3A | None |
Cry1Ab Cry1A.105 x Cry2Ab2 Cry1F |
Western bean cutworm (WBC) | Vip3A | Cry1F widespread in US and Canada |
Cry1Ab Cry1A.105 x Cry2Ab2 |
Corn rootworm (CRW) |
Cry3Bb1* Cry34/35Ab1* mCry3A* eCry3.1Ab* |
Cross resistance to multiple proteins is suspected in some Ontario populations. Pyramid hybrids may experience injury. Use with best management practices, esp. rotate to non-host crop where high pest pressure is observed. Cry3Bb1 in the US and Ontario Cry34/35Ab1 in the US and Ontario mCry3A in the US and Ontario eCry3.1Ab in the US |
*References for reported resistance: https://agrilife.org/lubbock/files/2020/02/BtTraitTable_Citations.pdf
Key Points When Selecting Bt Corn Hybrids for Pest Control:
Any edits required on these tables can be directed to: Tracey Baute, Field Crop Entomologist, OMAFRA