Download or read book Considerations for Use of the Aqua-Kleen Formulation of 2,4-D for Contro of Eurasian Water Milfoil in British Columbia written by Robert W. Adams and published by . This book was released on 1983 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observations on the effectiveness, persistence and drift of 2,4-D(Aqua-Kleen) were reviewed following 33 treatments to controlEurasian water milfoil between 1976 and 1981. These experimentsindicated that in certain locations, 2,4-D was effective inremoving nuisance weed growth for up to three years followingtreatments. Legal considerations, procedures for application andmonitoring, and technical information on 2,4-D and othertreatment methods were reviewed to guide implementation of futuretreatment programs. The major advantage of herbicide use wasthat in some sites it could be applied relatively quickly, overlarge areas, at a low cost. The major limitation of herbicidetreatments was possible conflicts with water use. Followingexperimental treatments, concentrations of 2,4-D above thedrinking water standard (0.1 mg/L) persisted in the treated areafor a maximum of 4 to 6 days. Drift at this concentration wasdetected at a maximum of 125 m from open water treatments of 12ha or less in large lakes. Low concentration of herbicide (justabove 0.001 mg/L) were observed to drift up to 2 km and, typically, persisted for less than 40 days in treatment areas. It was unlikely that well water near treatment areas could becontaminated with 2,4-D, but the potential for hydrauliccontinuity between wells and treated water should be considered. No significant detrimental effects on non-target organisms wereobserved, although agencies responsible for wildlife resourcesshould be contacted about new treatment sites.