Herbicide Recommendations for Shelterbelts: Soil Applied Grass and Broadleaf Herbicides
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Table
of Contents| Trade Name | |
|---|---|
| Active Ingredient | dichlobenil |
| Formulation | 4 Gr |
| Rate per hectare (active) | 4.4 - 7 kg/ha |
| Rate per hectare (product) | 110 - 175 kg/ha |
| Rate per acre (product) | 44 - 70 kg/ac |
Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- PRE - Apply in early spring or late fall.
- Use the lower rate for spring application.
- Tolerant species include cedar, linden, maple, willow, caragana and ash. Reduce rates on lighter soils.
| Trade Name | |
|---|---|
| Active Ingredient | chlorthal dimethyl |
| Formulation | 75 WP |
| Rate per hectare (active) | 12.75 kg/ha |
| Rate per hectare (product) | 17 kg/ha |
| Rate per acre (product) | 6.8 kg/ac |
Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- Apply at lining out, late fall, or early spring in 340 L of water.
- Applications should be made to soil recently cultivated to a uniform texture.
- Rain or irrigation (1 cm) is needed to activate this herbicide.
| Trade Name |
or Simazine 480 |
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|---|---|---|
| Active Ingredient |
simazine
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or simazine
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| Formulation |
90 WG
|
480 g/L
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| Rate per hectare (active) |
2.25 - 3.37 kg/ha
|
2.25 - 3.37 kg/ha
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| Rate per hectare (product) |
2.5 - 3.75 kg/ha
|
4.7 - 7 L/ha
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| Rate per acre (product) |
1 - 1.5 kg/ac
|
1.88 - 2.8 L/ac
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Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- PRE - Apply in 500 L/ha (200 L/ac) water.
- Apply in the fall or spring prior to weed emergence or after emerged weeds have been removed.
- Windbreak species must be established for at least 1 year.
- Tolerant species include cedar, spruce, black walnut, white ash, green ash, elm, boxelder, maple and caragana.
- Check label for species which will tolerate higher rates of simazine. Apply before buds break in spring.
- Use low rate for sandy soils or low organic matter soils.
| Trade Name |
or Bonanza 400 |
|
|---|---|---|
| Active Ingredient |
trifluralin
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or trifluralin
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| Formulation |
480 g/L
|
400 g/L
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| Rate per hectare (active) |
0.6 - 1.155 kg/ha
|
0.6 - 1.155 kg/ha
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| Rate per hectare (product) |
1.25 - 2.4 L/ha
|
1.5 - 2.75 L/ha
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| Rate per acre (product) |
0.5 - 0.96 L/ac
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0.6 - 1.1 L/ac
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Precautions (For more information, see Chapter 4. Herbicides Used in Ontario, page 23 and Chapter 5. Notes on Adjuvants, page 69).
- PPI - Apply as a directed spray to the soil surface around the trees or shrubs.
- Incorporate as closely as possible to the trees and shrubs without
causing damage to their roots.
Related Links
- Weeds in Ontario
- Nursery and Landscape Plants 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
For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
| Author: | OMAFRA Staff |
|---|---|
| Creation Date: | 25 November 2002 |
| Last Reviewed: | 18 June 2010 |