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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2007.pdf#page=103
Last checked: 07/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Henry, G. M.;
Burton, J. D.;
Yelverton, F. H. |
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| Author Affiliation: | North Carolina State Univ., Raleigh |
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| Title: | Absorption, translocation, and metabolism of foramsulfuron in dallisgrass |
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| Section: | Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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| Meeting Info.: | Baltimore, Maryland: January 2-5, 2007 |
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| Source: | Proceedings of the Sixty-First Annual Meeting of the Northeastern Weed Science Society. Vol. 61, 2007, p. 85. |
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| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Adsorption rate; Dallisgrass control; Foramsulfuron; Herbicide evaluation; Plant metabolism; Sulfonylurea herbicides; Translocation
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| Abstract/Contents: | "Dallisgrass (Paspalum dilatatum Poir.) is a rhizomatous perennial warm-season grass that commonly infests managed turfgrass systems. The sulfonylurea herbicide foramsulfuron was recently registered (2003) for use in turfgrass for the postemergence control of several cool-season grasses, goosegrass, and henbit present within warmseason turf. Preliminary analysis of this herbicide has shown it to be a potential alternative to MSMA and glyphosate for the control of dallisgrass. Previous research was conducted to determine the efficacy of foramsulfuron applied alone or in combination with MSMA at various rates and timings. Foramsulfuron applied alone only provided < 5% control of dallisgrass 1 year after initial treatment (YAIT), while treatments containing the application of MSMA followed by foramsulfuron provided > 30% control 1 YAIT. Therefore, the objective of our research was to examine the effect of pre applications of MSMA on the absorption, translocation, and metabolism of 14C-foramsulfuron when foliar applied to mature dallisgrass. Naturally occurring populations of dallisgrass were obtained locally and propagated in the greenhouse. Foliar absorption of 14C-foramsulfuron was measured during a 48-h period. Herbicide treatments were prepared using 2-pyrimidyl 14C-foramsulfuron (4.51 MBq mg-1 specific activity, 98% purity). Treatments consisted of foramsulfuron (0.075 kg/ha) followed by followed by foramsulfuron 2 weeks after initial treatment (WAIT), MSMA (1.25 kg/ha) followed by foramsulfuron 2 WAIT, and no pre-treatment followed by foramsulfuron 2 WAIT. Radiolabeled material was applied during the second application of each treatment. Mature dallisgrass plants (20 cm in height) were selected to receive 14C-foramsulfuron treatments. Herbicide absorption was quantified at 0, 2, 4, 8, 24, and 48 h after treatment. At the appropriate harvest interval, the treated leaf was excised and rinsed in 50:50 methanolwater solution to remove unabsorbed 14C. After the methanol wash, the treated leaf was frozen. Each methanol leaf wash vial received 10 ml scintillation cocktail. Treated leaves were combusted in a biological sample oxidizer using a mixture of carbon dioxide absorbent and scintillation fluid to trap evolved 14CO2. All samples were then quantified by liquid scintillation spectroscopy. Data from this experiment are currently being analyzed." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Henry, G. M., J. D. Burton, and F. H. Yelverton. 2007. Absorption, translocation, and metabolism of foramsulfuron in dallisgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 61:p. 85. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2007.pdf#page=103
Last checked: 07/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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