John G. Skogerboe

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The aquatic fate of the triethylamine salt formulation of triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) was determined in whole-pond applications in closed (no water exchange) systems in California, Missouri and Texas in two studies conducted in 1995 and 1996. These studies determined dissipation rates of triclopyr and its principal metabolites,(More)
A study of the aquatic fate of the triethylamine salt of triclopyr (3,5,6-trichloro-2pyridinyloxyacetic acid) was conducted in three bays of Lake Minnetonka, Minnesota. Triclopyr is under review by the US Environmental Protection Agency as a selective aquatic herbicide. The primary purpose of this study was to determine dissipation rates of the parent(More)
BAGKGROUND: Diquat is an effective contact herbicide for controlling noxious aquatic weeds. For controlling submersed weeds, it is typically used in small treatment areas near boat docks, swimming beaches, and lake access points. Frequently, it is applied in areas where there is rapid water exchange as it quickly interrupts plant photosynthesis causing(More)
The submersed plants hydrilla ( Hydrilla verticillata (L.f.) Royle) and elodea ( Elodea canadensis Rich.) are both members of the Hydrocharitaceae family and cause problems in waterways throughout the world. Hydrilla is a serious nuisance weed in the southeast, and parts of the mid-Atlantic and western U.S. Although elodea is native to the U.S. in northern(More)
BACKGROUND: Eurasian watermilfoil (Myriophyllum spicatum L.) is a widespread submersed aquatic plant that causes nuisance problems across the continental United States. Eurasian watermilfoil is an herbaceous perennial submersed aquatic plant that typically grows in water depths of 1 to 3 m (Aiken et al. 1979). Vegetative propagation is either by direct stem(More)
Experiments were conducted in a laboratory and an outdoor mesocosm system to evaluate the liquid AVAST!® fluridone formulation for control of Eurasian watermilfoil (Myriophyllum spicatum). In addition, physiological assays were used to monitor plant injury during herbicide exposure. Eurasian watermilfoil was planted in 52-L aquaria, grown to precanopy(More)
Plant bioassays and simulated rainfall-surface runoff tests have been developed and are being refined to assist in the evaluation of the environmental impact of dredged material disposal alternatives. Plant bioassay tests have been used to give appropriate information to describe the potential for contaminant mobility from dredged material into plants(More)
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