control is a process were land is managed to insure good condition
with sustained use. If the land (soil, plants, ecosystem)
has been damaged and is "unhealthy" it is easier for invasive species
to move in. Damage can occur by natural disaster (flood, fire),
recreation (camping, off road vehicles), over-grazing, or farming.
This control method is most often practiced on agriculture-based
lands (cropland, pasture, and range), but can also be used in gardens,
parks, and our native wildlands.
control combines parts of the other control methods, but focuses
on improving the "health" of the native plants. If the native plants
are healthy, it is harder for a weed to become established. If a
weed does become established, the native plants are better able
to compete and suppress the weeds spread.
amount of use that an area of land receives must be monitored to
prevent damage. For example, both recreation and grazing take place
on much of our western grasslands and forests. Each of these land
uses can cause serious damage if not controlled. The impacts and
damage caused to the land depend on:
it is used (is it during an important growth season?)
it is used (distribution: is one area more heavily used than another?)
long it is used (duration)
often it is used (frequency)
many are using the land (stocking rate)
Both land uses can make full use of the land if managed properly.
A large group of people or animals could stay at the same site if
they didn't stay long or come back often. Smaller groups could stay
longer and return more. In order to ensure the health of an area,
use may need to be restricted. In some cases, the area may need
additional help to prevent the invasion of noxious weeds. Reseeding
desired plants, mechanical or herbicide control, and a different
management strategy may also be required.
are also managed using a number of tools that suppress weed infestations.
Smother crops are used to form dense vegetation stands to compete
with weeds during the off-season. Competitive crops that are quick
to germinate, have a fast growth rate, and are tall in stature can
also be used to suppress weeds. Crop rotation is another effective
means of fighting against annual and short lived perennials. The
type of plant, the time of planting, and seed-bed preparation are
all an essential part of cultural weed control.