In This Section

Topics

Herbicide Recommendations for Brush Control: Basal-Bark Treaments in Oil as a Carrier

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: Basal-Bark Treaments in Oil as a Carrier


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. 2,4-D
  3. Diphenoprop, Desormone, Estaprop or Dichlorprop
  4. Garlon 4
  5. 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)
  6. Other Brush Control Weed Control Recommendations
  7. Related Links

 

Introduction

The Basal-Bark treatment is useful on a wide range of trees and brush with a trunk diameter up to about 15 cm. Apply the chemical so as to thoroughly cover the basal 30 cm of the trunk and any exposed roots. For oak, hickory, basswood or ash, treatments are most effective from February to June. Most other species may be treated at any season of the year.

Light, simple equipment, coupled with the possibility of winter operations when labor is cheaper and access to swampy areas possible, give this treatment an important role in a brush control program.

| Top of Page |

2,4-D
Trade Name

or 2,4-D

or 2,4-D
Active Ingredient
2,4-D
or 2,4-D
or 2,4-D
Formulation
470 g/L
564 g/L
660 g/L
Rate per hectare (active)
3 kg/100 L
3 kg/100 L
3 kg/100 L
Rate per hectare (product)
6.4 L/100 L
5.3 L/100 L
4.55 L/100 L

Precautions

  • For hawthorn. Use the low-volatile ester formulations in fuel oil.
| Top of Page |
Diphenoprop or Desormone or Estaprop or Dichlorprop or Turboprop 600
Trade Name

or Desormone

or
Estaprop

or Dichlorprop D
Active Ingredient
dichlorprop / 2,4-D
or dichlorprop / 2,4-D
or dichlorprop / 2,4-D
or dichlorprop / 2,4-D
or dichlorprop / 2,4-D
Formulation
679 g/L
680 g/L
582 g/L
582 g/L
582 g/L
Rate per hectare (active)
1.9 to 3 kg/100 L
1.9 to 3 kg
/100 L
1.9 to 3 kg
/100 L
1.9 to 3 kg
/100 L
1.9 to 3 kg
/100 L
Rate per hectare (product)
2.8 to 4.4 L/100 L
2.8 to 4.4 L /100 L
3.2 to 5.2 L /100 L
2.3 L/100 L
2.4 to 3.2 L /100 L

Precautions

  • For most woody species, including conifers.
  • Use the low-volatile ester formulations in fuel oil.
  • Spray bark to wet only.
| Top of Page |
Garlon 4
Trade Name
Active Ingredient triclopyr
Formulation 480 g/L
Rate per hectare (active) 9.6 to 14.4 kg/100 L
Rate per hectare (product) 20 to 30 L/100L

Precautions

  • For most woody species, not including conifers.
  • Apply a 20%-30% solution mixed in mineral or vegetable oil.
  • One Sided Low Volume - This low volume treatment can be applied to stems less than 15 cm in diameter. Apply the spray to thoroughly wet at least one side of the stem and root crown but not to the point of run-off.
  • Streamline - Apply sufficient spray to one side of stems less than 8 cm in basal diameter to form a band that is 5 cm in width. The treatment zone should widen to encircle the stem within 30 minutes. Treat both sides of stems which are 8 to 12 cm in basal diameter.

| Top of Page |

Related Links

 

| Top of Page |

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca