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| DOI: | 10.21273/JASHS.115.4.605 |
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| Web URL(s): | https://journals.ashs.org/jashs/view/journals/jashs/115/4/article-p605.xml?rskey=P68cVS
Last checked: 11/07/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | McCarty, Lambert B.;
Higgins, Jeffery M.;
Corbin, Frederick T.;
Whitwell, Ted |
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| Author Affiliation: | Clemson University and North Carolina State University |
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| Title: | Absorption, Translocation, and Metabolism of Sethoxydim in Centipedegrass and Goosegrass |
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| Source: | Journal of the American Society for Horticultural Science. Vol. 115, No. 4, July 1990, p. 605-607. |
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| Publishing Information: | Westport, CT: AVI Publishing Co. |
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| Keywords: | TIC Keywords: Selectivity; Chromatography; Absorption; Translocation; Metabolism; Sethoxydim; Eremochloa ophiuroides; Eleusine indica; Carbon-14
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| Abstract/Contents: | "Absorption, translocation, and metabolism of foliar-applied 14C-labeled sethoxydim (14C-sethoxydim) in sethoxydim-tolerant centipedegrass [Eremochloa ophiuroides (Munro) Hack.] and sethoxydim-sensitive goosegrass [Eleusine indica (L.) Gaertn.] were determined. The distribution of 14C in treated leaves indicated that similar amounts (~3%) were found in the epicuticular wax fraction (chloroform wash) of both species after 6 hours. After 2 hours, 16% of the applied 14C-sethoxydim was absorbed in the treated leaf by centipedegrass, but only 2% was absorbed by goosegrass. After 2 hours, centipedegrass also readily translocated greater amounts of 14C than goosegrass (4.3% vs. 0.4%). Six hours after treatment, however, no differences were found in amounts absorbed by the treated leaf and translocated to apical and basal leaves. Because sethoxydim-tolerant centipedegrass absorbed and translocated similar amounts of 14C compared to the sethoxydim-sensitive goosegrass, these two mechanims do not appear to be a means of tolerance. The major difference found between the two species was in the metabolism of sethoxydim. After 6 hours, 81% to 98% of the 14C in goosegrass extracts remained as 14C-sethoxydim. In contrast, only 1% of the 14C found in apical leaves, basal leave, and roots of centipedegrass was identified as 14C-sethoxydim. These data indicated that differences in tolerance to sethoxydim between these two species were based on metabolism. Chemical name used: 2-[1-(ethoxyimino)butyl] -5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one (sethoxydim)." |
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| Language: | English |
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| References: | 16 |
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| See Also: | Other items relating to: CENT |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCarty, L. B., J. M. Higgins, F. T. Corbin, and T. Whitwell. 1990. Absorption, Translocation, and Metabolism of Sethoxydim in Centipedegrass and Goosegrass. J. Am. Soc. Hortic. Sci. 115(4):p. 605-607. |
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| DOI: 10.21273/JASHS.115.4.605 |
| Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/115/4/article-p605.xml?rskey=P68cVS
Last checked: 11/07/2019
Requires: PDF Reader |
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MSU catalog number: SB 1 .A46 |
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