Even with the successful insect control, it still takes years to see the results. In the mean time, the weeds are still reproducing. There has to be another control in place to keep the infestation in check until the insects can become established. Check with the local agencies such as CSU, the Extension Service, or the Weed District for more information before you spend your money. This includes the use of mowers, plows, chopping, etc.
Mechanical control is very sensitive to timing to be effective.
When you mow, plow or chop needs to be done at the plants correct stage of growth. Most mechanical controls need to be done several times during the growing season. All of this information can be obtained through the Weed Control District, CSU or the Extension Service. Cultural Control Cultural control is probably the most sensible control method available to the agricultural community. It simply means to change something to make it harder for the weeds to grow or become established.