Cranberries: Postemergence Grass Herbicides

Table of Contents

1. Poast Ultra + Merge
2. Venture L
3. Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
   • Annual Grasses
   • Annual Broadleaf Weeds
   • Perennial Weeds
4. Related Links

Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).

• New and established plantings.
• Apply to actively growing grasses.
• For annual grass, use 0.32 L/ha. Apply at the 1-6 leaf stage (2-5 is optimum).
• For volunteer grains, use 0.47 L/ha. Apply at the 1-6 leaf stage (2-5 is optimum).
• For quackgrass, use 1.1 L/ha. Apply up to the 3-leaf stage. Thorough preplant tillage will ensure more uniform quackgrass emergence. Use the high rate of MERGE for quackgrass.
• Use 100-200 L water/ha (40-80 L water/ac).
• Grasses emerging after application will not be controlled.
• Spray tips angled forward 45^o will give better coverage.
• Do NOT use flood jet or hollow cone nozzles.
• Do NOT apply if rain is expected within one hour after application.
• Do NOT apply closer than 15 days to harvest.

   

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  Venture L

  Trade Name	Venture L
  Active Ingredient	fluazifop-p-butyl
  Formulation	125 g/L
  Rate per hectare (active)	0.075 - 0.25 kg/ha
  Rate per hectare (product)	0.6 - 2 L/ha
  Rate per acre (product)	0.24 - 0.8 L/ac

  Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).

  • New and established non-bearing plantings.
  • Apply POST to actively growing grasses before tillering.
  • Apply at 0.6 L/ha (0.24 L/ac) at 2-5 leaf stage of volunteer corn.
  • Apply at 0.8 L/ha (0.32 L/ac) at 2-5 leaf stage of volunteer wheat and barley.
  • Apply at 1 L/ha (0.4 L/ac) at 2-5 leaf stage of annual grasses (2-4 leaf for foxtails).
  • Apply at 2 L/ha (0.8 L/ac) at 3-5 leaf stage of quackgrass and wirestem muhly. Thorough preplant tillage will ensure more uniform quackgrass emergence.
  • Use ONLY one application per season.

   

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  Related Links

  • Weeds in Ontario
  • Berries 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