Herbicide Recommendations for Vegetation Control - Short Term Non-selective: Foliage Treatment Chemical Mowing

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

Table of Contents

1. Introduction
2. Amitrol 240 or glyphosate
3. Reglone 240
4. 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)
5. Related Links

Introduction

Chemicals offer an alternative to mowing in areas where top kill of low growing vegetation is desired. The chemicals listed below are first applied when the growth is about 15 cm high. Spray to runoff. Tall vegetation is more difficult to kill and can become an unsightly fire hazard when it dies.

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Precautions

• Apply to actively growing foliage to be effective.
• Apply in sufficient water (200-400 L/ha (80-160 L/ac)) to thoroughly wet all foliage.
• With Amitrol 240, newly formed leaves turn white before the plants die. The appearance of foliage injury may be delayed during cool conditions.
• Regrowth may occur from freshly germinating plants or from underground portions of perennial weeds. (Also see, Wiper Applicators for Selective Weed Control section.)

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Precautions

• Apply at the higher rates and in a high spray volume (1000 L/ha (400 L/ac)) for dense weed growth.
• Use 1 L/1000 L of Agral 90 as a wetting agent for best results.

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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

   

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