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by the CSU extension service and the Rio Blanco County Weed Control manager . These <br />materials include colored pictures depicting the weeds of concern and brochures describing <br />effective control methods. All personnel will be instructed to report weed sightings and to cut <br />weeds with a shovel or hoe when only a few plants are present. <br />Implementation <br />An aggressive program will be needed to prevent infestation of disturbed areas with weeds. <br />Canada thistle will be controlled by cutting 2 to 3 times during [he growing season, at monthly <br />intervals, followed by fall application of Curtail, Tordon, or Banvel. Musk thistle will be <br />controlled by cutting the weed below the soil line before the bud stage,or by treating in spring or <br />fall with Tordon or Banvel. <br />New weed species may invade due to transport of seeds on vehicles and machinery. To help <br />limit transport of weeds to the site, all equipment will be washed prior to transport to the site. If <br />and when new weed species are identified on the site, they will be included in the plan and <br />effective means of control will be implemented as recommended by the County Weed Control <br />Department and/or the CSU Extension agent. <br />Effective weed management must be systematic and consistent. For large infestations, it is best <br />to start with perimeter control and then proceed to the heavier infestations. Records will be kept <br />including the procedures used, dates applied, weather conditions, growth stage and condition of <br />weeds and desirable plants. The records will be evaluated periodically for control success or <br />failure. This is especially important for perennial weeds where follow-up is a key to successful <br />weed management. Revisions to the plan will be included as needed by attaching infonnation in <br />appendix form. <br />l4 <br />