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Cutting down the shrub or tree and painting the stump surface immediately afterward <br /> with an herbicide (cut stump treatment such as Garlon 4, or equal) is the most effective <br /> control method. This herbicide must be applied per manufacturer's recommendations, <br /> but most require application within 10-15 minutes of cutting to prevent excessive <br /> resprouting from the stump. All branches and trunk pieces must be removed from the <br /> site to prevent sprouting. Mulching of the branches and trunks is an acceptable <br /> alternate to removal. The cut stump method is best done in the fall or winter after the <br /> tamarisk leaves have fallen. Rough barked plants should receive the cut stump <br /> treatment. Follow up treatment of sprouts will be necessary for 2-4 years to be <br /> successful. <br /> Biological Control: Biological control is the use of specific organisms to control an <br /> undesirable organism. For tamarisk, two bio-control agents have been identified — goats <br /> and a Chinese leaf beetle. Goats will feed on tamarisk shrubs if fencing is provided to <br /> limit other food sources. The Chinese leaf beetle will be released by the USDA in the <br /> future, but is not available to the general public at this time. <br /> Chemical control: The basal 12-18 inches of the trunks of small plants (usually around <br /> 1" in diameter) with smooth bark can be sprayed with herbicide (basal bark treatment). <br /> For best results, apply the basal treatment when plants are dormant. Foliar sprays <br /> (herbicide treatment) during the growing season must cover the entire leaf surface to be <br /> effective. Tamarisk infestations in close proximity to water or wildlife habitat should be <br /> sprayed with an aquatic friendly herbicide that is identified by the manufacturer as being <br /> non-toxic to aquatic and wildlife. This method is most effective on small diameter trees. <br /> Sprayed trees must be left standing 3-4 years to allow the herbicide to completely kill <br /> the tree. Follow up spraying may be necessary 1-2 years after treatment. <br /> CONTINUING WEED MANAGEMENT <br /> Elam Construction shall have the Bennett Pit inspected by an individual knowledgeable <br /> in identifying noxious weeds. These visual surveys shall be performed, twice per <br /> calendar year. The results of these surveys will aid in determining the proper controlling <br /> measures. <br /> Noxious Weed Management Plan 3 <br />