Aquatic Plant Research > Invasives > Management and Control > Eurasian Watermilfoil (EWM) Control > Large Scale Management > EWM 2,4-D > Efficacy, Selectivity, and Herbicide Concentrations after a 2,4-D Whole-lake Application
Aquatic Plant Research
Efficacy, Selectivity, and Herbicide Concentrations after a 2,4-D Whole-lake Application
Recognizing a need to better understand large-scale herbicide treatments, DNR Science Services conducted a controlled study examining the efficacy, selectivity, and longevity of utilizing early-season low-dose 2,4-D treatments on a lake-wide scale. While multi-year Eurasian watermilfoil control was achieved with these single low-dose applications, persistence of the herbicide was longer than expected and impacts to certain native plants were also observed. This study provides regional management and statewide policy makers with science-based information regarding large-scale 2,4-D treatments for control of Eurasian watermilfoil, and is the first of its kind to link field-collected 2,4-D concentration measurements to selectivity and long-term efficacy in Eurasian watermilfoil control following whole-lake management efforts. The resulting paper was nominated for the James LaBounty 'Best Paper' award in 2014 by the North American Lake Management Society's journal 'Lake and Reservoir Management.'