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Titolo:
The aquatic fate of triclopyr in whole-pond treatments
Autore:
Petty, DG; Skogerboe, JG; Getsinger, KD; Foster, DR; Houtman, BA; Fairchild, JF; Anderson, LW;
Indirizzi:
USA, Engineer Res & Dev Ctr, Waterways Expt Stn, Vicksburg, MS 39180 USA USA Vicksburg MS USA 39180 r, Waterways Expt Stn, Vicksburg, MS 39180 USA NDR Res, Plainfield, IN 46168 USA NDR Res Plainfield IN USA 46168NDR Res, Plainfield, IN 46168 USA Dow AgroSci, Indianapolis, IN USA Dow AgroSci Indianapolis IN USADow AgroSci, Indianapolis, IN USA US Geol Survey, Columbian Environm Res Ctr, Columbia, MO 65201 USA US GeolSurvey Columbia MO USA 65201 ronm Res Ctr, Columbia, MO 65201 USA Univ Calif Davis, USDA ARS, Aquat Weed Control Lab, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Weed Control Lab, Davis, CA 95616 USA
Titolo Testata:
PEST MANAGEMENT SCIENCE
fascicolo: 9, volume: 57, anno: 2001,
pagine: 764 - 775
SICI:
1526-498X(200109)57:9<764:TAFOTI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
HERBICIDE TRICLOPYR; DISSIPATION; RATES;
Keywords:
aquatic plant management; aquatic herbicide environmental fate; Eurasian watermilfoil; triclopyr; TCP; TMP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Getsinger, KD USA, Engineer Res & Dev Ctr, Waterways Expt Stn, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA USA 3909 Halls Ferry Rd Vicksburg MS USA 39180 MS 39180 USA
Citazione:
D.G. Petty et al., "The aquatic fate of triclopyr in whole-pond treatments", PEST MAN SC, 57(9), 2001, pp. 764-775

Abstract

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, 3,5,6-trichloropyridinol (TCP) and 3,5,6-trichloro-2-methoxypyridine (TMP) in water, sedimentand finfish. Ponds at each site containing a healthy biological community were treated at 2.5 mg AE litre(-1) triclopyr. Water and sediment samples were collected through 12 weeks post-treatment, and non-target animals were collected through 4 weeks post-treatment. Dissipation rates for triclopyr, TCP and TMP were similar at each of the study sites, despite differences inweather, water quality, biotic community, light transmission and geographic location. Half-lives of triclopyr in water ranged from 5.9 to 7.5 days, while those of TCP and TMP ranged from 4 to 8.8 and 4 to 10 days, respectively. Levels of triclopyr and TCP declined in sediments at half-lives rangingfrom 2.8 to 4.6 days and 3.8 to 13.3 days, respectively. No TMP was detected in sediment. Triclopyr and TCP cleared from fish in relation to concentrations found in the water column. TMP levels in fish were generally an order of magnitude higher than levels of triclopyr and TCP, particularly in thevisceral portion of the animals. No adverse effects on water quality or onthe non-target biotic community were found following triclopyr applications. Results of these studies were comparable to those of triclopyr dissipation studies conducted in reservoirs, lakes and riverine systems in Georgia, Florida, Minnesota and Washington, indicating that the degradation and dissipation of triclopyr and its metabolites are similar in representative systems throughout the USA. (C) 2001 Society of Chemical Industry.

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Documento generato il 02/07/20 alle ore 18:59:36