Roadsides and Non-crop Areas:
Roadside Weed Control
Excerpt from 2010-2011 Chapter 18, Publication 75,
Guide to Weed Control, Order
this publication
Roadside
Weed Control
The main objectives of a weed control program for roadsides are: (1)
to control tall growing weeds so that mowing costs can be minimized; (2)
to control weeds that may infest adjacent land by wind dispersal of seed;
(3) to maintain an attractive grass cover that will minimize erosion problems;
(4) to prevent buildup of excessive vegetation that can become a fire
hazard in the late summer or complicate snow removal in winter; and most
importantly, (5) to ensure highway safety.
Most broadleaf weeds are susceptible to early summer applications of 2,4-D
and related herbicides (See Table 18-2. Classification of Weeds According
to Response to Various Foliage Sprays, page 335). However, many weeds
are not effectively controlled by 2,4-D mixtures and these resistant weeds
can become an increasing problem unless other herbicides are used. It
may be justified using spot treatments with non selective chemicals that
may temporarily injure the grass to control isolated, but dense, patches
of difficult weeds before they spread and become a problem over a large
area.
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