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Herbicide Recommendations for Brush Control: Constant Volume Foliar Applications

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 20 June 2008

Pub 75: Guide to Weed Control > Roadsides and Non-Crop Areas > Herbicide Recommendations for Brush Control: Constant Volume Foliar Applications


Excerpt from 2008 Chapter 18, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Introduction
  2. Arsenal
  3. Diphenoprop, Estaprop or Dichlorprop
  4. Garlon 4
  5. Tordon 101
  6. Vanquish + 2,4-D
  7. Vanquish + Diphenoprop
  8. Roadsides & Brush Control Herbicide Rating Tables
    • Susceptibility of Woody Plants to Various Herbicides & Mixtures as Foliage Sprays (Table 18-1 ) (PDF 51k)
    • Classification of Weeds According to Response to Various Foliage Sprays (Table 18-2 ) (PDF 62k)
  9. Other Brush Control Weed Control Recommendations
  10. Related Links

 

For Brush Control on Roadsides and Other Rights-of-Way

  • For most deciduous woody species (excluding white ash)
Arsenal
Trade Name
Active Ingredient imazapyr
Formulation 240 g/L
Rate per hectare (active) 0.72 kg/ha
Rate per hectare (product) 3 L/ha
Rate per acre (product) 1.2 L/ac

Precautions

  • For maple, poplar, raspberry, and wildrose.
  • Apply in sufficient water (100-550 L/ha) (40-220 L/ac) to wet all foliage during periods of active growth.
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Diphenoprop or Estaprop or Dichlorprop or Turboprop 600
Trade Name

or
Estaprop

or Dichlorprop D

or Turboprop 600
Active Ingredient
dichlorprop / 2,4-D
or dichlorprop / 2,4-D
or dichlorprop / 2,4-D
or dichlorprop / 2,4-D
Formulation
679 g/L
582 g/L
582 g/L
582 g/L
Rate per hectare (active)
3.8 to 10.2 kg/ha
3.8 to 10.2 kg/ha
3.8 to 10.2 kg/ha
3.8 to 10.2 kg/ha
Rate per hectare (product)
5.5 to 15 L/ha
6.5 to 17.5 L/ha
6.5 to 17.5 L/ha
6.5 to 17.5 L/ha
Rate per acre (product)
2.2 to 6 L/ac
2.6 to 7 L/ac
2.6 to 7 L/ac
2.6 to 7 L/ac

Precautions

  • Apply in 750 to 1500 L/ha water (300 to 600 L/ac) during periods of active growth.
  • Rate of mixture depends on brush density or height.
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Garlon 4
Trade Name
Active Ingredient triclopyr
Formulation 480 g/L
Rate per hectare (active) 1.92 to 3.84 kg/ha
Rate per hectare (product) 4 to 8 L/ha
Rate per acre (product) 1.6 to 3.2 L/ac

Precautions

  • Apply this low volatile ester in a minimum of 200 L/ha water (80 L/ac) during periods of active growth.

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Tordon 101
Trade Name
Active Ingredient picloram/2,4-D
Formulation 305 g/L (1:3.7)
Rate per hectare (active) 5.49 to 7.62 kg/ha
Rate per hectare (product) 18 to 25 L/ha
Rate per acre (product) 7.2 to 10 L/ac

Precautions

  • Apply in 450 L/ha water (180 L/ac) during the active growing season.
  • Use an approved drift control system or additive.
  • A permit for purchase and use is required.
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Vanquish or Oracle + 2,4-D
Trade Name
Active Ingredient
dicamba
or dicamba
+ 2,4-D
Formulation
480 g/L
480 g/L
470 g/L
Rate per hectare (active)
2 kg/ha
2 kg/ha
3.8 kg/ha
Rate per hectare (product)
4.2 L/ha
4.2 L/ha
8 L/ha
Rate per acre (product)
1.7 L/ac
1.7 L/ac
3.2 L/ac

Precautions

  • Apply in sufficient water (220-330 L/ha) (88-132 L/ac) to wet all foliage.
  • Amine or ester formulations of 2,4-D may be used.

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Vanquish or Oracle + Diphenoprop
Trade Name
Active Ingredient
dicamba
or dicamba
+ dichlorprop/2,4-D
Formulation
480 g/L
480 g/L
679 g/L
Rate per hectare (active)
2.5 kg/ha
2.5 kg/ha
4.9 kg/ha
Rate per hectare (product)
5.2 L/ha
5.2 L/ha
7.2 L/ha
Rate per acre (product)
2.1 L/ac
2.1 L/ac
2.9 L/ac

Precautions

  • Apply in sufficient water (200-330 L/ha) (80-132 L/ac) to wet all foliage.

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Related Links

 

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