Highbush Blueberries - Established Plantings: Soil Applied Grass and Broadleaf Herbicides

Excerpt from 2010-2011 Chapter 14, Publication 75, Guide to Weed Control, Order this publication

Table of Contents

1. Casoron
2. Chateau Wdg.
3. Devrinol
4. Princep Nine-T or Simazine
5. Sencor 75 DF
6. Sinbar
7. Related Links

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

• Established plantings ONLY.
• PRE - Apply to cool moist but unfrozen soil in late fall or spring before weeds emerge.
• Do NOT apply if air temperatures are above 10-15°C to avoid injury from volatilization.
• Use the lower rate if irrigation or rain will follow application.
• 70 g CASORON G-4 applied to an area 2x2 m is equivalent to 175 kg/ha (70 kg/ac).
• Use ONLY under plants established for at least 3 years.
• Do NOT use on light, sandy soil.

Chateau Wdg.

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

• Established plantings ONLY.
• Maximum 2 applications per growing season at least 30 days apart.
• Do NOT apply to blueberries established for less than 2 years.
• DO NOT apply after budbreak unless using hooded or shielded equipment.
• Apply prior to weed emergence.
• Apply lower rate on sandy (coarse textured) soils with less than 5% organic matter and the higher rate on clay (medium textured) with less than 5% organic matter
• Apply using ground application ONLY.
• DO NOT apply through irrigation equipment.

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.
• PRE - Apply once per season, either in the fall or spring, before weeds emerge.
• Incorporation by rainfall or irrigation is essential.
• Do NOT apply to frozen ground.
• Do NOT apply within 70 days of harvest.

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

• Established plantings ONLY.
• PRE - Apply in 300-1,000 L/ha water (120-400 L/ac) before weed emergence.
• Use lower rates for coarse, sandy soil.
• Use higher rates for clay or higher organic matter soil.
• Use only on established plants.

Sencor 75 DF

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

• New plantings ONLY.
• Apply as a directed application in a band under the bushes.
• Apply to weed-free soil after planting.
• Do NOT harvest blueberries for 2 years.

   

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  Sinbar

  Trade Name	Sinbar
  Active Ingredient	terbacil
  Formulation	80 WP
  Rate per hectare (active)	2.2 - 3.4 kg/ha
  Rate per hectare (product)	2.75 - 4.25 kg/ha
  Rate per acre (product)	1.1 - 1.7 kg/ac

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

  • Established plantings ONLY.
  • PRE - Apply in 200-1,000 L/ha water (80-400 L/ac).
  • Use only in plantings established in the field for at least one year.
  • Make one application per year.
  • Injury may occur on sandy soil even with the low rate.
  • Use the high rate only on muck or peat soils where experience has shown this to be a safe practice.

   

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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