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<br />NOXIOUS WEED MANAGEMENT PLAN <br />Brannan Sand and Gravel Pit #29 <br />Introduction <br />The Adams County Weed Management Program was established by the <br />Commissioners in 1997 under the auspicious of the Colorado Noxious Weed Act <br />(C.R.S 35-5.5). The following plants were designated noxious weeds on subject <br />lands under the Act by the Board of County Commissioners (BOCC). They must <br />be managed where found on any subject lands. The BOCC retain the authority to <br />designate additional noxious weeds under the Act. <br />1. Leafy spurge (Euphorbia esula) <br />2. Diffuse knapweed (Centaurea diffusa) <br />3. Russian knapweed (Acroptilon repens) <br />4. Spotted knapweed (Centaurea maculosa) <br />5. Purple loosestrife (Lythrum salicaria) <br />6. Saltcedar (Tamazix ramosissima) <br />7. Dalmatian toadflax (Linaria dalmatica) <br />8. Yellow toadflax (Linaria vulgaris) <br />9. Musk thistle (Cazduus nutans) <br />10. Scotch thistle (Onopordum acanthium) <br />11. Canada thistle (Cirsium arvense) <br />12. Field bindweed (Convolvulus arvensis) <br />Integrated weed management includes the coordinated use of education, <br />prevention, good stewardship, and control methods, the purpose of which is to <br />achieve desirable plant communities. <br />Definitions <br />Control methods include cultural, mechanical, biological and chemical, <br />Cultural controls seek to control weed problems by establishing desired plant <br />species. Cultural techniques manipulate the plant community through cultivating <br />(cutting through and turning over the soil), re-seeding, fertilizing and irrigating. <br />There aze many native grasses and forbs that are low maintenance and provide <br />solid competition for noxious weeds once they become established. <br />Mechanical techniques like mowing, chopping, tilting, hand pulling, digging, or burning <br />can physically disrupt plant growth. <br />Biological weed management utilizes insects to aid in the control of select <br />noxious weed infestations. When used in an Integrated Weed Management <br />X:\I440000.a1 l\ 1445701 \ W ord\W eedPlan.doc <br />