. 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. Control of Cabomba Eurasian Milfoil and Water Lily in Lake Quonnipaug with Herbicides and Hydroraking 2002 Figure 4. Concentrations of 2,4-D in Lake Quonnipaug, 2002 100. 11-Jun 14-Jun 21-Jun 26-Jun Date 3-Jul 10-Jul Notification protocol was pursuant to Section 22a-66a(g) of the CT General Statutes. Lake water samples for pH, alkalinity, conductivity and 2,4- D analysis were obtained from 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. Control of Cabomba Eurasian Milfoil and Water Lily in Lake Quonnipaug with Herbicides and Hydroraking 2002 Figure 4. Concentrations of 2,4-D in Lake Quonnipaug, 2002 100. 11-Jun 14-Jun 21-Jun 26-Jun Date 3-Jul 10-Jul Notification protocol was pursuant to Section 22a-66a(g) of the CT General Statutes. Lake water samples for pH, alkalinity, conductivity and 2,4- D analysis were obtained from the surface and near the bottom in center of the east shoal treatment site, 100 feet away from the east shoal site and in the control site (>1000 feet away from treatment). Samples were collected 2 days prior to treatment on June 11,1 day after treatment (DAT) on June 14, 8 DAT on June 21, 13 DAT on June 26, 21 DAT on July 3 and 28 DAT on July 10. When 2,4-D fell below the detection limit of 1 ppb in all samples, this testing ceased. Water was analyzed for 2,4-D by solid phase extraction and liquid chromatography with a detection limit of 1 ppb (Bugbee et al., 2003). Total phosphorus was measured using the ascorbic acid method preceded by potassium persulfate digestion (APHA et al., 1995). Water temperature and dissolved oxygen where monitored with an YSI 58 meter at the surface and bottom of the treatment sites and at 1 meter intervals in the lake center. Transparency was determined with a Secchi disk. Alkalinity, pH and conductivity was measured on 250 ml samples taken m below the surface and kept chilled before being tested in the laboratory. A Fisher AR20 meter was used to determine pH and conductivity. Alkalinity was quantified using a Hach digital titrator and is expressed as mg/1 CaCO . The titrant was N H^SO^and the titration end point was pH Bottom sediment was obtained with al5xl5xl5cm Ekman grab sampler from three spots in the 2001 boat launch treatmen
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