Herbicide Recommendations for Woody Nursery Stock (Field Grown): Postemergence Grass and Broadleaf Herbicides

Pub 75: Guide to Weed Control > Nursery and Ornamental Crops > Herbicide Recommendations for Woody Nursery Stock (Field Grown): Postemergence Grass and Broadleaf Herbicides

Excerpt from 2010-11 Chapter 16, Publication 75, Guide to Weed Control, Order this publication

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

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

To be applied ONLY on spruce (Picea spp.)
Apply postemergence to actively growing plants, good coverage is essential.
If weeds are mature, it is advisable to cut them and then spray the re-growth.
Do NOT disturb treated plants for 2 weeks after application.
Do NOT make postharvest applications after October 1.
To control quackgrass and Canada Thistle, apply in the spring or fall to actively growing plants that are 15-20 cm tall. Wait 10-14 day and then plough or disk.
Avoid application to the crop during periods of rapid shoot elongation in the spring.
Applications can be made in the first year (0.68 L/ac) in either seedbed or transplants, but only after the seedlings have set bud.
The rate may be increased to 1.2 L/ac for actively growing seedlings or transplant bareroot spruce beyond the first year.

**Glyphosate** *
Trade Name	glyphosate *	glyphosate *	or glyphosate *	or glyphosate *	or glyphosate *
Active Ingredient	glyphosate*	glyphosate*	or glyphosate*	or glyphosate*	or glyphosate*
Formulation	360 g/L	450 g/L	480 g/L	500 g/L	540 g/L
Rate per hectare (active)	0.27 - 4.32 kg/ha	0.27 - 4.32 kg/ha	0.27 - 4.32 kg/ha	0.27 - 4.32 kg/ha	0.27 - 4.32 kg/ha
Rate per hectare (product)	0.75 - 12 L/ha	0.6 - 9.6L/ha	0.56 - 9 L/ha	0.54 - 8.64 L/ha	0.5 - 8 L/ha
Rate per acre (product)	0.3 - 4.8 L/ac	0.24 - 3.84 L/ac	0.22 - 3.6 L/ac	0.22 - 3.5 L/ac	0.2 - 3.2 L/ac

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

For actively growing weeds in the fall, or spring prior to emergence of any crop.
Allow 5-7 days translocation time after application before doing any tillage when conditions are good. If cool temperatures follow application, allow additional time for translocation to be completed before disturbing treated weeds.
Only weeds emerged at application time will be controlled. Additional weed control programs will be necessary to control weeds germinating later.
Repeat application to regrowth may be necessary for complete control.
For specific information on product rates and notes for annual and perennial weed control refer to Table 6-3 . Postharvest Weed Control Ratings, page 83.

*See Table 4-1. Herbicides Used in Ontario, page 23, for formulations available. See label for specific uses and rates.

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