. Control of cabomba, Eurasian milfoil and water lily in Lake Quonnipaug with herbicides and hydroraking, 2002. Nymphaeaceae; Eurasian watermilfoil; Noxious weeds; Aquatic herbicides; Cabomba caroliniana. Connecticut Agricultural Experiment Station BuUetin 1002. MATERIALS AND METHODS Meetings were held with the Guilford Conservation Commission, officials from the town of Guilford, Friends of Lake Quonnipaug and the Connecticut Department of Environmental Protection (CTDEP) to discuss the weed control options. A decision was made to treat Eurasian milfoil in the beach area and shoal areas in th


. Control of cabomba, Eurasian milfoil and water lily in Lake Quonnipaug with herbicides and hydroraking, 2002. Nymphaeaceae; Eurasian watermilfoil; Noxious weeds; Aquatic herbicides; Cabomba caroliniana. Connecticut Agricultural Experiment Station BuUetin 1002. MATERIALS AND METHODS Meetings were held with the Guilford Conservation Commission, officials from the town of Guilford, Friends of Lake Quonnipaug and the Connecticut Department of Environmental Protection (CTDEP) to discuss the weed control options. A decision was made to treat Eurasian milfoil in the beach area and shoal areas in the center of the lake with Navigate (granular 2,4-D). In the southern section of the lake, an area of emersed vegetation was designated for treatment with glyphosate (Eagre, Rodeo). After weeds were controlled with herbicide, hydroraking by Aquatic Control Technologies (ACT, Sutton, MA) would remove vegetative matter and floating islands of muck and plant roots. Locations for the Navigate treatment sites were determined by weeds found and documented on the September 27, 2001 survey (Figure 1) and visual confirmation by an informal survey conducted on June 11, 2002. A survey for water marigold was performed with Nancy Murray and Brian Hunter (CTDEP) on August 14, 2002, and a general aquatic vegetation survey was done on July 30, 31, 2002. Resources for plant identification included: Aquatic and Wetland Plants of Northeastern North America: Volumes 1 and 2 (Crow and Hellquist, 2000) and Aquatic Plants of the United States (Muenscher, 1944). In March 2002, CAES scientists applied to CTDEP for a permit to use 500 pounds of Navigate and 8 pints of Rodeo or Eagre. The permit was granted in May 2002. Navigate was applied on June 13, 2002 to Eurasian milfoil near the town beach and shoal areas in the center of the lake (Figure 2) at a rate of 150 pounds per acre. An electric spreader, mounted on the back of a powerboat, was used to distribute the granules. Liquid glyphosate (Eagre, 1% s


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