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Canada thistle <br />Field bindweed <br />Diffuse knapweed <br />Russian knapweed <br />Spotted knapweed <br />Musk thistle <br />Woollyleaf bursage <br />Jointed goatgrass <br />Leafy spurge <br />(Cirsium arvense) <br />(Convolvulus arvensis) <br />(Centaurea diffusa) <br />(Centaurea repens) <br />(Centaurea maculosa) <br />(Caruus nutans) <br />(Ambrosia grayi) <br />(Aeglops cylindricia) <br />(Euphorbia esula) <br />These noxious weeds are found in government and public lands as well as <br />pastures, meadows, watersheds, right-of--ways, residential areas and <br />streamlcreek beds. <br />IV. Weed Management Techniques <br />In accordance with The Colorado Noxious Weed Act CRS 35-5.5-104, "It is the <br />duty of all persons to use integrated methods to manage noxious weeds if the <br />same are likely to be materially damaging to the land of neighboring <br />landowners." <br />Weed management actions seek to achieve various levels of control. The <br />listings below are in order of decreasing control: <br />.t Eradication, where a population of weed species (including seeds) is <br />completely eliminated. <br />.t Killing an entire population of plants, with the expectation that they will <br />repopulate an area from seeds in the soil. <br />.t Weakening established plants with the hope that they will be more <br />susceptible to mortality in the future or that their seed population will <br />diminish. <br />.t Thinning plants, where some plants in the population are killed but many are <br />not. <br />.i Eliminating seed population by damaging the top growth of plants. <br />An Integrated System of Noxious Weed Management requires a strategy of <br />multiple management techniques. Which are as follows: <br />2 <br />