Herbicide Recommendations for
Field Grown Woody Nursery Stock: Postemergence Grass Herbicides
| Author: |
OMAFRA Staff
|
| Creation Date: |
25 November
2002
|
| Last Reviewed: |
20 June 2008
|
Excerpt from 2008 Chapter 16, Publication 75, Guide to Weed Control, Order
this publication
Table
of Contents
- Introduction
- Venture L
- Nursery and Ornamental Herbicide Rating Table (Table 16-1) (PDF
63 k)
- Other Woody Nursery Stock Weed Control Recommendations
- Woody Nursery Stock (Field Grown)
- Woody Nursery Stock (Container Beds)
- Woody Nursery Stock (Container Stock)
- Related Links
Introduction
Postemergence - Leaf stage of the weeds is critical
for good weed control. Smaller weeds are generally easier to kill but
there needs to be enough leaf surface to intercept the herbicide. Apply
according to recommended leaf stages. Crop stage is important to optimize
crop safety. Adjuvants will frequently improve the weed control when used
as directed. Weather or other conditions may influence the optimum rate
of adjuvant, see the product label for more details. Always use appropriate
drift management technology.
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| Trade Name |
|
| Active Ingredient |
fluazifop-p-butyl |
| Formulation |
125 g/L |
| Rate per hectare (active) |
0.075 to 0.25 kg/ha |
| Rate per hectare (product) |
0.6 to 2 L/ha |
| Rate per acre (product) |
0.24 to 0.8 L/ac |
Precautions
- 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
& wirestem
muhly.
- Thorough preplant tillage, fragmenting quackgrass rhizomes improves
control.
- Do NOT cultivate between rows until 5 days after
application.
- Consult the label for list of tolerant and sensitive species. Use
as a directed application in sensitive species to avoid contact with
leaves and green tissue. Some blue junipers (e.g. 'Bar Harbour', 'Blue
Acres', and 'Blue Rug') can be injured by over-the-top applications.
- Caution- there are differences between cultivars
in sensitivity to Venture L, e.g. Juniperus horizontalis 'Blue Acres'
is sensitive while Juniperus horizontalis 'Plumosa Compacta' is tolerant.
- Test on samples of each cultivar not specifically listed on the label
before using the herbicide or use as a directed application.
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Related Links
For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
|