Herbicide Recommendations for Established Grapes: Soil Applied Grass and Broadleaf Herbicides

Table of Contents

1. Casoron
2. Devrinol DF
3. Karmex
4. Princep Nine-T, Simadex or Simazine
5. Grape Herbicide Ratings:
   from Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
   • Annual Grasses
   • Annual Broadleaf Weeds
   • Perennial Weeds
6. Other Grape Weed Control Recommendations
   • New and Non-Bearing Grapevines
     • Soil Applied Grass Herbicides
   • Established Grapevines
     • Soil Applied Grass and Broadleaf Herbicides
7. Related Links

Precautions

• PRE - Apply to cool moist but unfrozen soil in late fall or spring before weeds emerge.
• Do NOT apply if air temps are above 10-15°C to avoid injury from volatilization.
• Apply to ONLY dormant healthy vines.
• Do NOT apply to vines until they have been established for at least 2 full years.
• For annual weeds, use 110-175 kg/ha (44-70 kg/ac).
• For quackgrass, and broadleaf perennial weeds, use 175-225 kg/ha (70-90 kg/ac).

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Precautions

• PRE - Apply in the fall through early spring before weeds emerge.
• Use ONLY under vines that have been established at least one year.
• Incorporation by rainfall or irrigation is essential.
• Do NOT apply on frozen ground.
• Avoid contact with fruit and foliage.

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Precautions

• PRE - Apply as a directed spray to a 1 m strip under vines before weeds emerge.
• Apply in at least 300 L/ha water (120 L/ac).
• Use ONLY in vineyards established for at least 3 years.
• Use 2.25 kg/ha (0.9 kg/ac) in most vineyards.
• Use 4.5 kg/ha (1.8 kg/ac) where weed growth is heavy.
• Use 6.7 kg/ha (2.68 kg/ac) on heavy clay soils, or on high organic matter content soils.
• Apply in spring or fall or both, but do NOT exceed 4.5 kg/ha (1.8 kg/ac) in most soils.
• May be tank mixed with Gramoxone.

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Precautions

• PRE - Apply after hills are removed, but before weed emerge.
• Apply in at least 300 L/ha water (120 L/ac).
• Use higher rates on perennial weeds.
• Use ONLY in vineyards established for at least 3 years
• May be tankmixed with Ignite and glyphosate.

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Related Links

• Weeds in Ontario
• Apples in Ontario
• Tender Fruit in Ontario
• Grapes in Ontario
• 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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