Roadsides and Non-crop Areas:
Vegetation Control - Long Term Non-selective
Excerpt from 2010-2011 Chapter 18, Publication 75,
Guide to Weed Control, Order
this publication
Vegetation
Control - Long Term Non-selective
CAUTION: These chemicals should not be used to treat
areas that are close to gardens, desirable trees, etc. Since these chemicals
are non-selective (will kill any plant that they contact), special care
must be used in their application. If the area (for example, a driveway)
is higher than a nearby lawn, the chemical may wash onto the lawn with
the first rain. If trees or shrubs are feeding under the treated areas,
the chemical may leach to their roots and cause injury.
It may be desirable to maintain certain areas completely free of vegetation.
Usually two problems are involved. First, the existing vegetation must
be destroyed, including the destruction of underground stems and roots
of perennials. Second, the bare area thus produced must be maintained
either by persistent soil active chemicals or by foliage treatment of
weed seedlings.
Some chemicals will kill existing vegetation. Others, while excellent
for maintaining the bare area, may be used more economically if combined
with another chemical to kill existing growth. If a mixed population of
weeds is present, combinations of chemicals that will kill the different
weed types may be used advantageously.
Uniform coverage with all chemicals is essential. Touch up operations
should be expected, as a single treatment will seldom give complete eradication.
Usually two applications of the lower recommended rate (i.e. 5.5–11
kg/ha), depending on the chemical used, spaced 6–12 months apart,
give better results than a single application of the higher recommended
rate. This approach also reduces the risk of off-site movement.
Related Links
