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| DOI: | 10.1614/WS-D-09-00019.1 |
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| Web URL(s): | http://www.bioone.org/doi/full/10.1614/WS-D-09-00019.1
Last checked: 02/01/2011
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-D-09-00019.1
Last checked: 02/01/2011
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| Publication Type:
| Refereed |
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| Author(s): | Brosnan, James T.;
Thoms, Adam W.;
McCullough, Patrick E.;
Armel, Gregory R.;
Breeden, Gregory K.;
Sorochan, John C.;
Mueller, Thomas C. |
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| Author Affiliation: | Brosnan and Armel: Assistant Professor; Thoms: Graduate Research Assistant; Breeden: Extension Assistant; Sorochan: Associate Professor; Mueller: Professor, Department of Plant Sciences, University of Tennessee, Knoxville, TN; McCullough: Assistant Professor, Department of Crop and Soil Sciences, University of Georgia, Griffin, GA |
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| Title: | Efficacy of flazasulfuron for control of annual bluegrass (Poa annua) and perennial ryegrass (Lolium perenne) as influenced by nitrogen |
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| Section: | Weed management
Other records with the "Weed management" Section
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| Source: | Weed Science. Vol. 58, No. 4, October-December 2010, p. 449-456. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 8 |
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| Related Web URL: | http://www.bioone.org/doi/abs/10.1614/WS-D-09-00019.1
Last checked: 02/01/2011
Notes: Abstract only |
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| Keywords: | TIC Keywords: Absorption rate; Application rates; Flazasulfuron; Herbicide evaluation; Liquid scintillation counting; Lolium perenne; Nitrogen fertilization; Poa annua control; Sulfonylurea herbicides; Translocation
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| Abstract/Contents: | "Certain sulfonylurea (SU) herbicides are used to remove overseeded cool-season species from bermudagrass. The effects of nitrogen (N) on the efficacy of a new SU herbicide, flazasulfuron, have not been determined. Field and laboratory studies were conducted in 2008 and 2009 evaluating the efficacy of flazasulfuron for control of overseeded perennial ryegrass contaminated with annual bluegrass. Flazasulfuron was applied at rates of 4.4, 8.8, and 17.5 g ha-1 alone, and in between sequential applications of N fertilizer at 73 kg N ha-1. N was granularly applied immediately prior to herbicide treatment and 4 wk later. In both years, the level of annual bluegrass control with flazasulfuron and two applications of N at 73 kg N ha-1 was significantly greater than following treatment with flazasulfuron alone. This response was observed for all application rates of flazasulfuron on every rating date. The level of annual bluegrass control with flazasulfuron at 4.4 g ha-1 and two applications of N at 73 kg ha-1 was greater than flazasulfuron at 17.5 g hat-1 alone each year. No significant differences in perennial ryegrass control were observed for flazasulfuron with and without N fertility. In laboratory studies with annual bluegrass, treatment with N fertilizer at 73 kg N ha-1 increased translocation of 14C flazasulfuron (and any potential metabolites) from treated annual bluegrass leaves to other shoot tissues by 18% at 1 h after treatment and 22% at 4 h after treatment compared to plants not treated with N fertilizer. This increase in translocation may explain the increased level of annual bluegrass control observed in the field." |
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| Language: | English |
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| References: | 37 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brosnan, J. T., A. W. Thoms, P. E. McCullough, G. R. Armel, G. K. Breeden, Thoms Sorochan. J. C., et al. 2010. Efficacy of flazasulfuron for control of annual bluegrass (Poa annua) and perennial ryegrass (Lolium perenne) as influenced by nitrogen. Weed Sci. 58(4):p. 449-456. |
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| DOI: 10.1614/WS-D-09-00019.1 |
| Web URL(s):
http://www.bioone.org/doi/full/10.1614/WS-D-09-00019.1
Last checked: 02/01/2011
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-D-09-00019.1
Last checked: 02/01/2011
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2203399a |
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