Vegetation Management Flashcards
What is scouting?
Scouting is the process of routinely observing the right-of-way for weeds.
What information should be recorded during scouting?
The types of weeds
present should be recorded on a mile-by-mile basis. Any noxious weeds that might require special
control techniques should be recorded.
What is a threshold?
A threshold is the level of infestation at which control practices are justified.
What are some drawbacks of mechanical control?
Hand-operated methods of mechanical control can be labor-intensive, costly, and dangerous.
Mowing does not kill the plant roots, so regrowth is possible.
What are biological controls?
Biological control uses living organisms
(insects, animals, or pathogens) to control undesirable
vegetation.
Give an example of biological control.
Scotch broom -Flower moth, seed weevil, twig miner Tansy ragwort -Flea beetle, seed fly, cinnabar moth Dalmatian toadflax -Flower beetle, foliage worm, capsule weevil, root-boring moth, root-galling weevil, stemboring weevil
True or false: Using herbicides interferes with the goals of Integrated Vegetation Management
(IVM).
False. Chemicals can be used as part of an overall IVM program.
What are mechanical controls?
Mechanical techniques are the oldest methods
of vegetation control. They include hand-pulling,
blading, grubbing, and mowing.
Hand-operated methods include power
weeders, string trimmers, chain saws,
brushhooks, machetes, hoes, and shovels.
What are some drawbacks of biological controls?
Currently, the use of disease organisms is very limited. Conrol populations always lag behind the development of the weed population. Controls are very specific. The inability to adequately control a variety of weeds in a timely manner on rights-of-way
What can be guessed about soils in an area where reed canarygrass, cattails, rushes, and sedges are present?
wet, poorly
drained areas that may have standing water
What can be guessed about soils in an area where annual weeds are present?
in nonbareground
managed areas, indicate either recent
disturbance to the site or a site so nutritionally
depleted it cannot support adequate perennial
ground cover
What can be guessed about soils in an area where St. Johnswort or disffuse knapweed are present?
they must have sandy, well-drained soils - these areas are susceptible to leaching
What can be guessed about soils in an area where Foxtail barley or rabbitfoot clover are present?
Foxtail barley or
rabbitfoot clover along the pavement may indicate
high salt levels.
