Herbicide Recommendations for Pasture Renovation with Bird's-foot Trefoil: Postemergence Grass and Broadleaf Herbicides

Table of Contents

1. Introduction
2. Glyphosate
3. Gramoxone
4. Forage Crops Herbicide Weed Control Ratings (Table 10-1) (PDF file - 62 kb)
   • Annual Grasses
   • Broadleaf Weeds
   • Perennial Weeds
5. Other Forage Crops Weed Control Recommendations
   • Forage Legumes
   • Forage Sorghum and Forage Millet
   • Pastures (mostly grasses)
6. Stages of Leaf Development
   • Alfalfa, Red Clover Ladino, Aslike and Black Medic
   • Bird's-foot Trefoil
7. Related Links

Introduction

The introduction of this legume into a pasture requires control of competition from weeds and forage grasses for the first 2-4 months after the legume seed begins to germinate. Control of established perennial weeds should start at least one year before the legume seeding operation. Treatments recommended in Chapter 6 of this publication could be used. If the field cannot be plowed and worked to prepare a seedbed, one of the following chemical treatments can be used to suppress the sod.

The success of these programs depends on many management factors such as inoculation of the trefoil seed, and control of fertility and grazing. Consult local agricultural authorities for more information about pasture renovation.

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Precautions

• Apply when the forage grasses have at least 2 leaves.

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Precautions

• Broadcast seed and fertilizer in mid-April.
• Apply Gramoxone early May when the grass is 5 -10 cm high before the legume seed germinates.

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Related Links

• Weeds in Ontario
• Forage and Pasture
• PMRA website search for labels
• OMAFRA Publication 505: Ontario Weeds
• OMAFRA Publication 75: Guide To Weed Control

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