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Page 16 of 23 <br />Perennial peperweed <br />111anat;en <br />Appendix I <br />Perennial pepperweed is most open found in open, unshaded areas on disturbed, and often saline soils. <br />most common in seasonally wet areas from 5,500 to 9,000 feet. Areas along the South Platte River, in t <br />San Luis Valley are, and communities of the Piceance Basin of Colorado are susceptible to Perennial <br />pepperweed. Best management is to treat as soon as found. <br />Mechanical Control of Perennial Pepperweed <br />Periodic mowing and spring burning have reduced perennial pepperweed density in Utah (FEIS 1996) <br />Hefiicides: <br />Chemical Control of Perennial Pepperweed <br />Metsulfuron at the rate of 0.45 oz. ai/acre is the most et~ective herbicide treatment. Dicamba at 1 Ib. <br />ai/acre, glyphosate at 15 Ib. ai/acre or glyphosate +?,4D at 54 fl. oz. Product/acre will control perennial <br />pepperw~c~e~d Other herbicides that proved to be etlective include chlorsulfuron and imazapyr. <br />