In This Section

Topics

Table 9-1. Corn Herbicide Weed Control Ratings: Perennial Weeds

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 10 May 2008

Pub 75: Guide to Weed Control > Corn > Table 9-1. Corn Herbicide Weed Control Ratings: Perennial Weeds

Excerpt from 2008 Chapter 9, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Soil Applied Grass Herbicides
  2. Soil Applied Broadleaf Herbicides
  3. Soil Applied Grass and Broadleaf Herbicides
  4. Soil Applied Tank-Mixes
  5. Postemergence Grass Herbicides
  6. Postemergence Broadleaf Herbicides
  7. Postemergence Grass and Broadleaf Herbicides
  8. Postemergence Grass and Broadleaf Herbicides (herbicide tolerant hybrids only)
  9. Postemergent Tank-Mixes
  10. Postemergent Tank-Mixes (herbicide tolerant hybrids only)
  11. Directed Postemergence
  12. Directed Postemergence (herbicide tolerant hybrids only)
  13. Other recommendations in Table 9-1: Corn (Field and Sweet) Herbicide Weed Control Ratings
  14. Other Herbicide Recommendations for Corn
  15. Corn Leaf Stages
  16. Related Links
Soil Applied Grass Herbicides
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Dual II Magnum (E) (sd,sw,fd)
 0 0 0 8b* 0 0 0
Eradicane (E) (sw,fd)
 2 7 0 8a* 2a 2 2
Frontier (E) (sd,sw,fd)
 0 0 0 8b* 0 0 0
Prowl (E) (fd)
 ? ? ? ? ? ? ?
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
a - Use the high rate of herbicide for optimum control.
b - Use PPI timing for optimum control.
**Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
***Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Soil Applied Broadleaf Herbicides
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Lorox
(G)**** (sw,sd)***
 0 0 0 0 0 0 0
atrazine** (E) (sd,sw,fd)
 2 0 0 0 2 2 0
2* 0 0 0 0 2* 2*
Callisto (E) (sd,sw,fd)
 2 0 0 0 0 0 0
Marksman (G) (fd)
 2* 0 0 0 2 2* 2*
2 0 0 5 5 2 2
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Soil Applied Grass and Broadleaf Herbicides
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Battalion1 (G)*** (fd)**
 ? ? ? ? 7 ? ?
Converge Pro1 (G)(fd)
 ? 0 0 0 0 0 0
Primextra II Magnum (E) (sd,sw,fd)
 0 0 0 8b* 0 0 0
* - Indicates the weed is listed on the product label for control or suppresssion.
b - Use PPI timing for optimum control.
1 - Indicates herbicides sold as a co-pack under this trade name.
**Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
***Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Soil Applied Tank-Mixes
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
2* 0 0 7 0 2* 2*
Dual II Magnum + Callisto + atrazine** (E) (sd,sw,fd)
 2 0 0 7 0 0 0
? 0 0 7 0 0 0
0 0 0 7 0 0 0
2* 0 0 7 0 2* 2*
Eradicane + atrazine** (E) (sw,fd)
 2 7 0 8a* 2a* 2 2
Eradicane + Sencor (G) (fd)
 2 7 0 8a* 2a* 2 2
Frontier + atrazine** (E) (sw,fd)
 2 0 0 8b* 2 2 0
2* 0 0 7 0 2* 2*
Frontier + Marksman (G) (fd)
 2* 0 0 7 2 2* 2*
Lorox + atrazine** (E) (fd)
 2 0 0 0 2 2 0
2* 0 0 7 0 2* 2*
2 0 0 7 0 0 0
0 0 0 7 0 0 0
Prowl + atrazine** (E) (fd)
 2 ? ? ? 2 2 ?
? ? ? ? ? ? ?
Prowl + Marksman (E) (fd)
 ? ? ? ? ? ? ?
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
a - Use the high rate of herbicide for optimum control.
b - Use PPI timing for optimum control.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Postemergence Grass Herbicides
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Dual II Magnum (E)*** (sd,sw,fd)**
 0 0 0 0 0 0 0
Frontier (E) (fd)
 0 0 0 0 0 0 0
Accent (E3) (sd,sw3,fd)
 0 0 0 0 9* 0 0
Ultim (G) (fd)
 ? ? 7 ? 9* ? ?
* - Indicates the weed is listed on the product label for control or suppresssion.
3 - Use only on selected varieties - see precautions for tolerant varieties on label.
**Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
***Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Postemergence Broadleaf Herbicides
Trade Name
Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
2,4-D** (G)**** (fd)***
 7 0 0 0 0 8 8
8 0 0 0 0 8 8
atrazine** + oil (G) (sd,sw,fd)
 7 5 2 5 5 7 2
8* 0 0 0 0 9* 8*
Basagran Forté (E) (sd,sw,fd)
6* 0 0 6* 0 6 8*
7 7 0 0 0 7* 7*
Callisto + atrazine** (E) (fd)
 2 0 0 0 0 0 0
Distinct (E) (fd)
 8 0 0 0 0 9 9
Impact + atrazine** (E) (fd)
 ? ? ? ? ? ? ?
Koril (E) (sw,fd)
 7 0 0 0 0 7 7
Laddok (E) (sd,sw,fd)
 7 0 0 6* 0 7 7
Marksman (E) (fd)
 8* 0 0 0 0 8 8*
MCPA** (G) (fd)
 7 6 0 0 0 7 7
Pardner (E) (sw,sd,fd)
 7 0 0 0 0 7 7
Peakplus1 (E) (fd)
 ? ? ? 0 0 ? ?
Shotgun (E) (fd)
 0 ? 0 0 0 ? ?
Summit (G) (fd)
 ? ? ? ? 9* 9* ?
8* 0 0 0 0 8* 8*
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Postemergence Grass and Broadleaf Herbicides
Trade Name
Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Battalion1 (G)**** (fd)***
 ? ? ? ? 7 7 ?
Primextra II Magnum (E) (sd,sw,fd)
 0 0 0 3 0 0 0
Postemergence Grass and Broadleaf Herbicides (herbicide tolerant hybrids only)
Trade Name
Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Liberty 200 SN3 (E3)*** (fd3)****
 6* 6 ? 6 6/7* 8* 7*
glyphosate**4 (E4) (fd4)
 7/8 ? 8* 7* 9* 8* 9*
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
1 - Indicates herbicides sold as a co-pack under this trade name.
3 - For use on on glufosinate ammonium (Liberty Link) tolerant corn only.
4 - For use on Roundup Ready corn (glyphosate tolerant) only.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Postemergence Tank-Mixes
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
8* 0 0 0 9* 9* 8*
Accent + Callisto + atrazine** (E) (fd)
 2 0 0 0 9* 0 0
8 0 0 0 9* 9 9*
Accent + Marksman (E) (fd)
 8* 0 0 0 9* 8 8*
Accent + Pardner (E) (fd)
 7 0 0 0 9* 7 7
5 0 0 0 9* 0 0
Accent + Shotgun (G) (fd)
 0 ? 0 0 9* ? ?
8* 5 2 5 5 9* 8*
7 7 2 5 5 7* 7*
atrazine** + Koril (E) (sw,fd)
 7 5 2 5 5 7 2
atrazine** + Pardner (E) (sd,sw,fd)
 7 5 2 5 5 7 2

Banvel II or Oracle + 2,4-D** (G) (fd)

 8* 0 0 0 0 9* 8*
8* 0 0 0 0 9* 8*
8* 0 0 0 0 9* 8*
2 0 0 3 0 0 0*
8* 0 0 0 0 8 8*
8* 0 0 0 0 9* 8*
Frontier + Marksman (E) (fd)
 8* 0 0 0 0 8 8*
Impact + Frontier + atrazine** (E) (fd)
 ? ? ? ? ? ? ?
Option 1.2.3. (E) (fd)
 ? 0 0 0 ? ? ?
Option + atrazine** (E) (fd)
 7 5 2 5 7/8* 7 2
8 0 0 0 9* 9* 8*
Option + Callisto + atrazine** (E) (fd)
 2 0 0 0 9* 0 0
Option + Distinct (E) (fd)
8 0 0 0 9* 0 0
Option + Marksman (E) (fd)
 8 ? ? 0 7/8* 8 8*
Option + Pardner + atrazine** (E) (fd)
 7 5 2 5 8* 7 5
Option + Peakplus1 (E) (fd)
 ? ? 7 0 9* ? ?
8* 0 0 3 0 8 8*
2 0 0 3 0 0 0*
? ? ? ? ? ? ?
Prowl + atrazine** (E) (fd)
 2 ? ? ? 2 2 ?
? ? ? ? ? ? ?
Prowl + Marksman (E) (fd)
 ? ? ? ? ? ? ?
Prowl + Shotgun (E) (fd)
 0 ? 0 0 0 ? ?
Summit + Accent (E) (fd)
 ? ? ? ? 9* 9 ?
8* 0 0 0 9* 9* 8*
Ultim + Callisto + atrazine** (G) (fd)
 ? ? 7 ? 9* ? ?
8 8* 6 0 9* 9 9
Ultim + Marksman (G) (fd)
 8* 0 0 0 9* 8 8*
Ultim + Pardner (G) (fd)
7 0 0 0 9* 7 7
Ultim + Pardner + atrazine** (G) (fd)
7 5 2 5 9* 7 2
Ultim + Peakplus1 (G) (fd)
 ? ? 7 ? 9* ? ?
Ultim + Shotgun (G) (fd)
 0 ? 7 0 9* ? ?
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
1 - Indicates herbicides sold as a co-pack under this trade name.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Postemergence Tank-Mixes (herbicide tolerant hybrids only)
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Liberty 200 SN3 + atrazine (E3)**** (fd3)***
 6* 6 2 6 6/7* 8* 7*
8* ? ? 0 6/7* 9* 8*
Liberty 200 SN3 + Marksman (E3) (fd3)
 8* ? ? 0 6/7* 8 8*
Liberty 200 SN3 + Prowl (E3) (fd3)
 ? ? ? 0 6/7* 8* 7*
Galaxy4 (E4) (fd4)
 7/8 ? 8* 7* 9* 8* 9*
glyphosate4,5 + atrazine** (E4) (fd4)
 7/8 ? 8* 7* 9* 8* 9*
7/8 ? 8* 7* 9* 8* 9*
glyphosate4,5 + Marksman (E4) (fd4)
 7/8 ? 8* 7* 9* 8* 9*
7/8 ? 8* 7* 9* 8* 9*
? - Insufficient information available to make a rating.
* - Indicates the weed is listed on the product label for control or suppresssion.
** - Various formulations available, see Table 1, Herbicides Used in Ontario.
1 - Indicates herbicides sold as a co-pack under this trade name.
4 - For use on glufosinate ammonium (Liberty Link) tolerant corn only.
5 - For use on glyphosate tolerant (Roundup Ready) tolerant corn only.
***Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
****Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Directed Postemergence
Trade Name
 Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Lorox (G)*** (sw,fc)**
 7 8* 7 8* 7 8 7
Ultim (G) (fc)
 ? ? ? ? 9* ? ?

Directed Postemergence (herbicide tolerant hybrids only)
Trade Name
Field Bindweed Horsetail Milkweed Nut sedge Quackgrass Sow-thistle Canada thistle
Liberty 200 SN4 (E4)*** (fd4)**
 ? ? ? 0 6/7* 8* 7*
* - Indicates the weed is listed on the product label for control or suppresssion.
4 - For use on on glufosinate ammonium (Liberty Link) tolerant corn only.
**Crop Registrations: fd - field corn, sw - sweet corn, sd - seed corn
***Crop tolerance rating: E - Excellent, G - Good, F - Fair, P - Poor

| Top of Page |

Related Links

| Top of Page |

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca