Use your mouse to select the best answer for each question.

1. To avoid suppressing the native plant community, burned areas with adequate desired plants and propagules should not be revegetated.

   1.   ?    True. Usually revegetation is not considered in areas where the desired vegetation cover is more than 30 percent.
   2.   ?    False.
   3.   ?    True. Usually revegetation is not considered in areas where the desired vegetation cover is more than 50 percent.

2. Timing the application of soil residual and non-residual herbicides is important.

   1.   ?    "Soil residual" herbicides refer to herbicides that remain in the soil and continual their herbicidal action for a certain length of time after application.
   2.   ?    Soil residual herbicides refer to herbicides that are packaged with pre-filtered top soil.

3. The most effective times to apply nonredisual systemic herbicides are during:

   1.   ?    Rain and wind storms.
   2.   ?    The seeding/rosette, early bud, and fall regrowth stages.
   3.   ?    Hot summer months when weed growth is slowed.

4. This process begins with shifting the competitive balance from the infestation to the desired plants through revegetation after the infestation has been successfully weakened.

   1.   ?    Mecanical controls, such as mowing.
   2.   ?    Chemical controls, such as herbicide treatments.
   3.   ?    Cultural controls, such as grazing and encouraging the growth of desired vegetation.
   4.   ?    Biological controls, such as weed-damaging insects.
   5.   ?    All of the above.