Highbush Blueberries - Established Plantings: Non-Selective Herbicides and Tank Mix Options

Table of Contents

1. Glyphosate
2. Gramoxone
3. Gramoxone + Princep Nine-T
4. Cane and Bush Berries Herbicide Ratings:
   from Tree Fruit Herbicide Rating Tables (Table 15-1) (PDF 110k)
   • Annual Grasses
   • Annual Broadleaf Weeds
   • Perennial Weeds
5. Related Links

    

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   Glyphosate

   Trade Name	glyphosate	or glyphosate	or glyphosate	or glyphosate
   Active Ingredient	glyphosate	or glyphosate	or glyphosate	or glyphosate
   Formulation	360 g/L	480 g/L	500 g/L	540 g/L
   Rate per hectare (active)	1 - 2 kg/ha	1 - 2 kg/ha	1 - 2 kg/ha	1 - 2 kg/ha
   Rate per hectare (product)	2.8 - 5.6 L/ha	2.08 - 4.17 L/ha	2.0 - 4.0 L/ha	1.85 - 3.7 L/ha
   Rate per acre (product)	1.12 - 2.24 L/ac	0.83 - 1.67 L/ac	0.8 - 1.6 L/ac	0.74 - 1.48 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 plantings.
   • Apply as a directed spray under the bushes, avoiding new shoots.
   • Apply in 200-300 L/ha water (80-120 L/ac), using no more than 275 kPa pressure.
   • Avoid contact with fruit, foliage or canes.
   • Use only one application per season.
   • Do NOT apply closer than 30 days to harvest.

    

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   Gramoxone

   Trade Name	Gramoxone
   Active Ingredient	paraquat
   Formulation	200 g/L
   Rate per hectare (active)	1.1 kg/ha
   Rate per hectare (product)	5.5 L/ha
   Rate per acre (product)	2.2 L/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.
   • Apply in 1,000 L/ha water (400 L/ac).
   • For spot spraying, apply 55 mL product/10 L water sprayed to wet weed foliage.
   • Use on plantings established at least one year.

    

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   Gramoxone + Princep Nine-T

   Trade Name	Gramoxone	+ Princep Nine-T
   Active Ingredient	paraquat	+ simazine
   Formulation	200 g/L	90 WG
   Rate per hectare (active)	1 kg/ha	1.8 - 2.25 kg/ha
   Rate per hectare (product)	5 L/ha	2 - 2.5 kg/ha
   Rate per acre (product)	2 L/ac	0.8 - 1 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.
   • For emerged weeds with residual control of germinating weeds.
   • Apply as a directed spray to established plantings.
   • Use 1,000 L/ha water (400 L/ac) to wet weed foliage.
   • Use lower rates for coarse, sandy soil.
   • Use higher rates for clay or higher organic matter soil.

    

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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