Herbicide Recommendations for Brush Control: Stem Foliage Treatments Applied to "Runoff"

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

Table of Contents

1. Introduction
2. 2,4-D
3. Diphenoprop, Desormone, Estaprop or Dichlorprop
4. Garlon 4
5. Glyphosate
6. Krenite
7. Tordon 101
8. Vanquish + 2,4-D
9. Vanquish + Diphenoprop or Desormone
10. 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)
11. Other Brush Control Weed Control Recommendations
• Constant Volume Foliar Applications (Most deciduous woody species excluding white ash)
• Basal-Bark Treaments in Oil as a Carrier
• Stump Treatment After Cutting to Most Deciduous Woody Species
1. Related Links

Introduction

Stem foliage treatment of brush should be limited to smaller growth (less than 2 m in height). Treatments should be applied to thoroughly wet the stems and foliage to the point of runoff. This technique is most effective just after full leaf development in late spring or early summer.

The choice of herbicides for controlling stands of deciduous brush should be based on the susceptibilities of the predominant species (Table 18-1) or whether the brush to be controlled is near homes, recreational areas, etc.

| Top of Page |

2,4-D

Trade Name	2,4-D	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)	1.7 to 4.2 kg/1000 L	1.7 to 4.2 kg/1000 L	1.7 to 4.2 kg/1000 L
Rate per hectare (product)	3.6 to 9 L/1000 L	3 to 8.5 L/1000 L	2.6 to 7.3 L/1000 L

Precautions

• One application may be sufficient for sensitive species.
• For intermediately sensitive species, repeated treatments are normally required.

| Top of Page |

Diphenoprop, Estaprop, Dichlorprop, or Turboprop

Trade Name	Diphenoprop BK 700	or Desormone	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	or dichlorprop / 2,4-D
Formulation	679 g/L	679 g/L	582 g/L	582 g/L	582 g/L
Rate per hectare (active)	5.1 to 6.8 kg/1000 L	5.1 to 6.8 kg/1000 L	5.1 to 6.8 kg/1000 L	5.1 to 6.8 kg/1000 L	5.1 to 6.8 kg/1000 L
Rate per hectare (product)	7.5 to 10 L/1000 L	7.5 to 10 L/1000 L	8.75 to 11.7 L/1000 L	8.75 to 11.7 L/1000 L	8 to 11 L/1000 L

Precautions

• Apply the low-volatile ester in areas dominated by species expected to be tolerant to 2,4-D alone.

| Top of Page |

---

Garlon 4

Trade Name	Garlon 4
Active Ingredient	triclopyr
Formulation	480 g/L
Rate per hectare (active)	1.92 to 3.84 kg/1000 L
Rate per hectare (product)	4 to 8 L/1000 L

Precautions

• Apply to the point of run-off when the brush is actively growing.
• Use the higher rate for the more difficult species (See Table 18-2).

| Top of Page |

Glyphosate

Trade Name	glyphosate	or glyphosate	or glyphosate	or glyphosate
Active Ingredient	glyphosate	or glyphosate	or glyphosate	or glyphosate
Formulation	360 g/L	480 g/L	500 g/L	540 g/L
Rate per hectare (active)	3.6 to 7.2 kg/1000 L	3.6 to 7.2 kg/1000 L	3.6 to 7.2 kg/1000 L	3.6 to 7.2 kg/1000 L
Rate per hectare (product)	10 to 20 L/1000 L	7.5 to 15 L/1000 L	7.2 to 14.4 L/1000 L	6.67 to 13.3 L/1000 L

Precautions

• Most woody and herbaceous species. Can be applied during June, July or August.
• Injury to grasses will occur; use other selective products if grasses are to be maintained.

| Top of Page |

---

Krenite

Trade Name	Krenite
Active Ingredient	fosamine ammonium
Formulation	480 g/L
Rate per hectare (active)	4.81 to 7.21 kg/1000 L
Rate per hectare (product)	10 to 15 L/1000 L

Precautions

• For oak, maple, alder, hickory and ash.
• Additional surfactants may be required for difficult species.

| Top of Page |

---

Tordon 101

Trade Name	Tordon 101
Active Ingredient	picloram/2,4-D
Formulation	305 g/L (1:3.7)
Rate per hectare (active)	3.05 kg/1000 L
Rate per hectare (product)	10 L/1000 L

Precautions

• Excluding white ash.
• Apply to wet the stems and foliage to the point of runoff when the leaves are fully expanded.
• A permit for purchase and use is required.

| Top of Page |

---

Vanquish or Oracle + 2,4-D

Trade Name	Vanquish	or Oracle	+ 2,4-D
Active Ingredient	dicamba	or dicamba	+ 2,4-D
Formulation	480 g/L	480 g/L	470 g/L
Rate per hectare (active)	1.9 kg/1000 L	1.9 kg/1000 L	3.8 kg/1000 L
Rate per hectare (product)	4 L/1000 L	4 L/1000 L	8 L/1000 L

Precautions

• Apply to the point of runoff when the leaves are fully expanded.

| Top of Page |

---

Vanquish or Oracle + Diphenoprop or Desormone

Trade Name	Vanquish	or Oracle	+ Diphenoprop BK 700	or + Desormone
Active Ingredient	dicamba	or dicamba	+ dichlorprop / 2,4-D	or + dichlorprop /2,4-D
Formulation	480 g/L	480 g/L	679 g/L	680 g/L
Rate per hectare (active)	2.5 kg/1000 L	2.5 kg/1000 L	4.9 kg/1000 L	4.9 kg/1000 L
Rate per hectare (product)	5.2 L/1000 L	5.2 L/1000 L	7.15 L/1000 L	7.15 L/1000 L

Precautions

• For white ash and sugar maple.
• Apply to the point of runoff when leaves are fully expanded.

| Top of Page |

---

Related Links

• Weeds 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

   

  | Top of Page |