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Chemical Methods <br /> Spot Spraying—We use this method to eliminate or contain small or isolated patches of noxious <br /> weed species. It is used along trails and in natural areas to minimize off-target impacts to other <br /> sensitive or desirable plants or to prevent seed distribution of noxious weeds using larger <br /> equipment. This method may include the use of backpack sprayers, handheld spraying nozzles <br /> from trucks, or Utility Terrain Vehicles (UTV's). <br /> Stump Treatments-Used to apply herbicide directly to the cut portion of woody noxious <br /> weeds, such as Russian Olives and Tamarisk. We use this method reduce the amount of <br /> herbicide needed to control large woody species and it is highly effective with minimal off-target <br /> impacts. This method includes the use of hand pump sprayers and sponge applicators. <br /> Broadcast Spraying—We have used this method to treat large infestations for elimination and <br /> containment of noxious weeds. It is also used to prepare large priority areas identified for <br /> restoration. This method can also be used for emergency treatments in accordance with the Early <br /> Detection Rapid Response program outlined by the Colorado Department of Agriculture. <br /> Broadcast spraying is often the most effective and cost-effective method to control large noxious <br /> weed infestations because of size, type of infestation, and nature of topography. <br /> A contractor was hired to broadcast spray selective broadleaf and preemergent herbicide around <br /> Ken Mitchell Lake. There was minimal success with the herbicide application due to lack of rain <br /> which was needed for activation. <br /> Weed Management Adaptive Decision Model <br /> This model outlines the steps to plan for and implement best practices in managing noxious <br /> weeds. In general, the decision model describes a cycle wherein a noxious weed population is <br /> identified, management objectives are defined, including desired results (or outcomes), treatment <br /> plan and methods are identified, treatment is completed, and effectiveness is evaluated and <br /> monitored,with subsequent treatments occurring until target results are achieved, adjusting the <br /> methods along the way as needed. <br /> Identify New Noxious Start Monitor Previously Identified <br /> Weed Populations Populations and Treatment Areas <br /> A <br /> List A List B List C Exceeds Target Reached Target ► <br /> Effective <br /> Establish Treatment Complete Evaluate <br /> ► Plan and Choose Treatment Effectiveness <br /> Cutturat.Mechantcat. <br /> Biological,Chem Ineffective <br /> Define Management <br /> Objectives and Target Results <br />