Publication 75 Guide to Weed Control: Corn

Chapter 9 - Corn

1. Introduction
2. Corn Herbicide Recommendations
• Preplant Burndown and Residual Control
• Soil Applied Grass Herbicides
• Soil Applied Broadleaf Herbicides
• Soil Applied Grass and Broadleaf Herbicides
• Soil Applied Tank-Mixes (for Control of Grass and Broadleaf Weeds)
• Postemergence Grass Herbicides
• Postemergence Broadleaf Herbicides and Tank-Mixes (for Broadleaf Weed Control)
• Postemergence Grass and Broadleaf Herbicides
• Postemergence Tank-Mixes (for Control of Grass and Broadleaf Weeds)
• Postemergence Grass and Broadleaf Herbicides - for Liberty Link (glufosinate tolerant) hybrids only
• Postemergence Tank-Mixes - for Liberty Link (glufosinate tolerant) hybrids only
• Postemergence Grass and Broadleaf Herbicides - for Roundup Ready (glyphosate tolerant) hybrids only
• Postemergence Tank-Mixes - for Roundup Ready (glyphosate tolerant) hybrids only
• Directed Postemergence
• Directed Postemergence for Liberty tolerant hybrids only
3. Herbicide Ratings Tables (Table 9-1) (PDF file - 335 KB)
   • Annual Grasses
   • Annual Broadleaf Weeds
   • Perennial Weeds
4. Corn Leaf Stages
5. Additonal Weed Control Ratings for Corn (Field, Seed and Sweet) (Table 9-2) (PDF 187 KB)
• Grasses
• Annual and Bienniel Broadleaves
• Perennials
6. Table 9-3. Registered "Two-Way" Soil Applied Herbicide Tank-Mixes in Corn (PDF 163 KB)
7. Table 9-4. Registered Postemergence "Two-Way" Herbicide Tank-Mixes in Corn (PDF 187 KB)
8. Table 9-4. Maximum Weed Leaf Stages (or Height) for Postemergence Herbicide Application in Corn (PDF 187 KB)

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Related Links

• Weeds in Ontario
• Corn in Ontario
• Problem Weed Control in Field Crops
• Integrated Pest Management (IPM)
• Pesticide Application and Safety
• Pesticide Companies and Agents
• OMAFRA Sprayer Calibration Calculator
• Search the PMRA website
• OMAFRA Publication 505: Ontario Weeds
• OMAFRA Publication 75: Guide To Weed Control

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