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Weed Management Objectives: Maintain weeds at current populations and not allow <br />growth of infested areas. <br />Potential Noxious Weeds and Control Measures <br />The noxious weeds described in the plan are listed by the Colorado Department of Agriculture, <br />Morgan County Noxious Weed Management Program, County Noxious Weed List and could <br />potentially be found on the site. This list includes: <br />Field Bindweed (Convolvulus arvensis) <br />Jointed Goatgrass (Aegilops cylinrica) <br />Knapweed, Diffuse (Centaura diffusa) <br />Knapweed, Russian (Acroptilon repens) <br />Knapweed, Spotted (Centaura masculosa) <br />Leafy Spurge ((Euphorbia esula) <br />Thistle, Canada (Cirsium vulgare) <br />Thistle, Musk (Carduus nutans) <br />Volunteer Rye <br />Additional noxious weeds not identified by Morgan County include: <br />Salt Cedar (Tamarix Chinesis, T. parviflora, And T. ramosissima) <br />Russian Olive (Elaeagnus angusifolia) <br />Weed Control Methods <br />The following weed control methods have been incorporated in the Noxious Weed Control <br />Plan. <br />1. Cultural controls such as proper grazing management, irrigation, and seeding to grow <br />desirable plant species. <br />2. Mechanical control such as mowing, tillage, mulching, burning and flooding. <br />3. Chemical control with the use of herbicides. <br />4. Biological control such as insect or disease organisms, or large herbivores. <br />The methods can be used individually or in combination to effectively control the specific <br />weeds. <br />Monitoring <br />The site should be monitored yearly for changes in infestation, and written records kept. A <br />photographic record can also be kept. At the minimum, identify the size of the infestation and <br />the general abundance of weeds in the area. For a more detailed account of the infestation, see <br />the attached methodology description and Weed abundance and monitoring data sheet, <br />developed by the Colorado Natural Areas Program <br />(http: / /parks. state. co. us / cnap /IWM_handbook/IWM_index.htm). If infestations are not <br />controlled, revise management as necessary. <br />