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Roadsides and Non-crop Areas:
General Treatments for Woody Species
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| Author: | OMAFRA Staff |
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| Creation Date: | 25 November 2002 |
| Last Reviewed: | 20 June 2008 |
| Pub 75: Guide to Weed Control > Roadsides and Non-Crop Areas> General Treatments for Woody Species |
Excerpt from 2008 Chapter 18, Publication 75, Guide to Weed Control, Order
this publication
Table
of ContentsSingle or scattered trees or shrubs may be controlled efficiently with dry applications of sodium borate or chlorate mixtures. Apply the chemical in a band at the base of the plant, following the manufacturer's directions.
On stands of deciduous or coniferous brush that range from light to scattered, use individual spot treatment with bromacil (Hyvar X-L). It may be applied with an exact delivery hand gun. Apply undiluted at 10 g/m of height (5 cm diameter) or brush or dilute one Hyvar X-L with 5 L of water and apply 60 g/m of height of brush. Taller and larger brush requires progressively more herbicide.
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Many trees sprout prolifically after they have been pruned. The application of fortified tree wound dressings to the surface of the cuts can reduce the number of new sprouts from many tree species.
These paints improve natural inhibition achieved through the use of poor trimming practice. All pruning should be done to strong laterals. Severe pruning should be avoided.
Best results will be obtained if the materials are applied to the cuts between April 15-July 15. Treatment of all cuts is important, as each is a potential location for sprouting from both dormant and adventitious buds. Cover the entire cut and about 2 cm of the surrounding bark, especially below the cut. Heavy tree wound dressing will adversely affect the rate of callus formulation of some species.
Glyphosate as a 0.15 g Ezject capsule can be used to control woody brush and trees with an Ezject capsule injection system. Capsules must penetrate through the outer bark and into the inner living tissue to provide effective results. Capsules should be spaced evenly around the tree, below all major branches at a rate of one capsule per 5 cm sem diameter at breast height (dbh). Stems should be in excess of 3 cm dbh but usually not in excess of 20 cm dbh. Trees should not be frozen at time of treatment. Allow 1-2 yr. for complete control.
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