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Cheatgrass (Bromus tectoruni) is a highly invasive annual or winter annual grass, and is <br />the subject of considerable research on effective controls due to its impact on Great Basin <br />rangelands. Aminocychlopyrador as Matrix has been found to be effective when <br />applied according to specific label directions. Roundup (glyphosatej. Journey. Plateau. <br />and Landmarke may also be effective when used according to label directions. Though <br />this weed was not observed the site should continue to be monitored for its presence. <br />Tarweed (Madia glomerate) is a broadleaf annual. They can be controlled by either <br />using Round -up, where grass loss can be tolerated, or disked before flowering. Because <br />tarweed is an annual and prevention of seed production is the primary goal, an <br />application of 2 gtsiacre of 2,4-D 4 lb amine can effectively dessicate the weed and <br />prevent seed maturity. Tarweed can be controlled with Escort at 3,4 oz per acre with a <br />good surfactant. This weed will typically disappear once good grass cover is established. <br />Common mullein (Verbascum Thapsus) Is a broadleaf biennial with prolific seed <br />production potential and extreme seed longevity. It is relatively difficult to control with <br />herbicides, but responds well to Perspective at 5-7 oz. / ac. When using Perspective near <br />trees or desirable shrubs care must be taken to avoid the root zone. Removal of flowering <br />stalks and bagging and disposing of them is a good technique for preventing new seed <br />populations. Spraying should be done on or 2nd year rosettes with sufficient water <br />volume and a good surfactant to ensure herbicide penetration. <br />Other Noxious Weeds not listed here: Glyphosate (Roundup) is often, but not always <br />effective when treating individual plants or when loss of grass is not a problem. The <br />Routt County Weed Supervisor will work with the permit holder to develop specific <br />control measures needed to control any noxious weeds found in the future on this <br />property but not described here. <br />6 <br />