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Bt Corn Products/Traits Available in Canada – As of October 2020

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
mCry3A

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
mCry3A eCry3.1Ab

1

1 - 2

1 - 2

1 - 2

0

0

0 - 2

X

X

 

 

5% IR

 Agrisure Duracade®  5222

E-Z Refuge®

Cry1Ab Cry1F Vip3A
mCry3A eCry3.1Ab

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
(2 row minimum)

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
(2 row minimum)

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:

  1. No one protein controls all corn pests. Know your primary pest of concern and select hybrids that contain proteins that provide effective control. Most hybrids contain multiple proteins to control ECB and/or CRW but may not target your primary pest of concern.
  2. To reduce the risk of resistance, select hybrids that contain more than one protein against your primary pest concern.
  3. If only one protein is available to control your primary pest concern, do not use that protein every year.
  4. Growers should avoid continuous use of any control technology and implement recommended best management practices, especially crop rotation to a non-host, in situations where high corn rootworm populations are observed and/or a resistant population is suspected.
  5. Note any potential resistance cases mentioned for each pest.  Some resistance cases are local or regional while others are widespread. Resistant pest populations that migrate from the southern US can influence the effectiveness of Bt traits in Canada, as is the case with corn earworm.
  6. Scout and report any injury found by pests that should be controlled by the Bt hybrid are using. If injury has been found, contact your seed agronomist, provincial entomologist and/or Tracey Baute, OMAFRA, Chair of the Canadian Corn Pest Coalition.

Any edits required on these tables can be directed to: Tracey Baute, Field Crop Entomologist, OMAFRA