In This Section

Topics

Herbicide Recommendations for Corn: Postemergence Tank-Mixes - for Roundup Ready (glyphosate tolerant) hybrids only

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

Pub 75: Guide to Weed Control > Corn > Herbicide Recommendations for Corn: Postemergence Tank-Mixes - for Roundup Ready (glyphosate tolerant) hybrids only

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

Cover of Publication 75, Guide to Weed ControlTable of Contents

  2. Glyphosate + Atrazine 480
  3. Glyphosate + Callisto + Aatrex Liquid + non-ionic surfactant
  4. Glyphosate + Marksman
  5. Glyphosate + Primextra II Magnum
  6. Corn Herbicide Weed Control Ratings (Table 9-1) (PDF file - 214kb)
  7. Other Herbicide Recommendations for Corn
  8. Corn Leaf Stages
  9. Related Links
    Galaxy1 (ElimEP + Roundup Weathermax)
    Trade Name
    Active Ingredient
    rimsulfuron
    + glyphosate
    Formulation
    25 DF
    540 g/L
    Rate per hectare (active)
    12.5 g/ha
    0.9 g/ha
    Rate per hectare (product)
    50 g/ha
    1.67 L/ha
    Rate per acre (product)
    20 g/ac
    0.67 L/ac

    Precautions

  • Use ONLY with pedigreed (certified) corn seed designated as glyphosate tolerant or "Roundup Ready Corn".
  • Apply spike to the 6-leaf stage corn.
  • Use on corn with corn heat units (CHU) greater than 2500.
  • Water Volume: 140-190L/ha
  • Symptoms appear after 5-7 days, but may not be noticeable for 2-3 weeks. Provides residual control of fall panicum, green foxtail, lamb's-quarters and pigweed spp.

 

| Top of Page |

Glyphosate + Atrazine 480
Trade Name glyphosate

or glyphosate

 + Atrazine 480
Active Ingredient
glyphosate
or glyphosate
+ atrazine
Formulation
360 g/L
540 g/L
480 g/L
Rate per hectare (active)
0.9 kg/ha
0.9 kg/ha
0.75 to 1.0 kg/ha
Rate per hectare (product)
2.5 L/ha
1.67 L/ha
1.56 to 2.1 L/ha
Rate per acre (product)
1 L/ac
0.67 L/ac
0.63 to 0.85 L/ac

Precautions

  • Use ONLY with pedigreed (certified) corn seed designated as glyphosate tolerant or "Roundup Ready Corn".
  • Apply up to and including the 5-leaf stage of corn.
  • Atrazine will provide the residual control of broadleaf weeds.

| Top of Page |

Glyphosate + Callisto + Aatrex Liquid + non-ionic surfactant

Trade Name
+ non-ionic surfactant
Active Ingredient
glyphosate
+ mesotrione
+ atrazine
+ non-ionic surfactant
Formulation
360 g/L
480 g/L
480 g/L
 
Rate per hectare (active)
0.9 kg/ha
0.1 kg/ha
0.28 kg/ha
0.2 %v/v
Rate per hectare (product)
2.5 L/ha
0.21 L/ha
0.58 L/ha
2 L/1,000 L
Rate per acre (product)
1.0 L/ac
0.085 L/ac
0.235 L/ac
2 L/1,000 L

Precautions

  • Use ONLY with pedigreed (certified) corn seed designated as glyphosate tolerant or "Roundup Ready Corn".
  • Apply up to and including the 8-leaf stage of corn.
  • Callisto and Atrazine will provide residual broadleaf weed control.
  • Refer to Table 9-5,for a complete list of glyphosate products that can be tank-mixed with Callisto plus Aatrex Liquid.


| Top of Page |

Glyphosate + Marksman
Trade Name
Active Ingredient
glyphosate
or glyphosate
+ dicamba/atrazine
Formulation
360 g/L
540 g/L
401 g/L (1:2)
Rate per hectare (active)
0.9 kg/ha
0.9 kg/ha
1 to 1.5 kg/ha
Rate per hectare (product)
2.5 L/ha
1.67 L/ha
2.5 to 3.7 L/ha
Rate per acre (product)
1 L/ac
0.67 L/ac
1 to 1.5 L/ac

Precautions

  • Use ONLY with pedigreed (certified) corn seed designated as "Roundup Ready Corn".
  • Apply up to and including the 5-leaf stage of corn.
  • Marksman will provide residual control of broadleaf weeds.
  • See precautions for Banvel II or Oracle applied POST.

| Top of Page |
Glyphosate + Primextra II Magnum
Trade Name
Active Ingredient
glyphosate
+ s-metolachlor/benoxacor/ atrazine
Formulation
360 g/L
720 g/L
Rate per hectare (active)
1.0 L/ac
1.0 L/ac
Rate per hectare (product)
2.5 L/ha
2.5 L/ha
Rate per acre (product)
0.9 kg/ha
1.8 kg/ha

Precautions

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