|
|
|
Getsinger, K.D., J.D. Madsen, T.J. Koschnick, M.D. Netherland, and R.M. Stewart, 2001. Whole-Lake Applications of SonarTM for Selective Control of Eurasian Watermilfoil, U.S. Army Corps of Engineers, Waterways Experiment Station U.S. Army Engineer Waterways Experiment Station (February 2001): 59 Pages Reprinted with kind permission from the Defense Technical Information Center (DTIC) Whole-Lake Applications of SonarTM for Selective Control of Eurasian WatermilfoilThe aquatic herbicide Sonar AS (fluridone) is being used in Northern tier states to selectively control the submersed exotic species Eurasian watermilfoil (Myrtophyllum spicatum L.) growing in lakes and reservoirs. Reliable quantitative information linking changes in the submersed plant community following fluridone applications is limited, particularly with respect to water residue records; therefore, a study was conducted to investigate the impact of low-dose fluridone treatments on the aquatic plant communities in eight lakes of southern Michigan The main objective of the study was to determine whether submersed plant species diversity and frequency were impacted by low-dose fluridone applications in the year of treatment, when targeting for Eurasian watermilfoil control. Secondary objectives included (a) determining fluridone effectiveness on the exotic submersed species curly leaf pondweed (Potamogeton crispus L.), (b) evaluating shifts in plant species diversity at 1- year posttreatment, (c) measuring the effect of thermal stratification on water column distribution of fluridone residues, and (d) verifying laboratory-derived results of fluridone concentration and exposure time relationships with respect to efficacy against Eurasian watermilfoil. Contact: Kurt Getsinger, Waterways Experiment Station, U.S. Army Corps of
Engineers, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA |