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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=97
Last checked: 07/22/2013
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): | Breeden, G.;
Brosnan, J.;
Armel, G.;
Vargas, J. |
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| Author Affiliation: | University of Tennessee, Knoxville, TN |
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| Title: | Postemergence herbicide mixtures for Star-of-Bethlehem control in cool-season turf |
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| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
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| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 81. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Ornithogalum umbellatum; Postemergence herbicides; Weed control
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| Abstract/Contents: | "Star-of-Bethlehem (Ornithogalum umbellatum) is a perennial ornamental plant that has become a troublesome weed in many turf and landscape areas. Data evaluating chemical options for selective Star-of-Bethlehem control in cool-season turf is limited. Two research trials were conducted in the spring of 2009 evaluating the efficacy of various herbicides alone, and in mixtures for postemergence control of Star-of-Bethlehem. The objective of trial one was to determine if mesotrione and sulfentrazone provided greater control of Star-of-Bethlehem than the current commercial standards of carfentrazone-ethyl and bromoxynil, while trial two evaluated the efficacy of mesotrione and topramezone applied alone, and in mixtures with photosystem II inhibiting herbicides, for Star-of-Bethlehem control. All trials were conducted on a mature stand of tall fescue (Festuca arundinacea) maintained as a golf course rough at the Plant Science Unit of the East Tennessee Research and Education Center in Knoxville, TN. Plots (1.5 by 3 m) were arranged in a randomized complete block design with three replications. Herbicide treatments for trial one included bromoxynil (560 g ai/ha), sulfentrazone (280 g ai/ha and 420 g ai/ha), carfentrazone (35 g ai/ha), quinclorac + sulfentrazone + 2,4-D + dicamba (1730 g ai/ha), and sulfentrazone + 2,4-D+ MCPP+ dicamba (1220 g ai/ha). Herbicide treatments for trial two included topramezone (37 g ai/ha), mesotrione (280 g ai/ha), bentazon (560 g ai/ha) and bromoxynil (560 g ai/ha), and mixtures of mesotrione and topramezone with bentazon and bromoxynil. All treatments were applied on 10 March with a CO2 powered boom sprayer calibrated to deliver 280.5 L/ha utilizing four, flat-fan, 8002 nozzles at 124 kPa, configured to provide a 1.5-m spray swath. Weed control and turf injury were evaluated visually utilizing a 0 (no weed control or turf injury) to 100 (complete weed control or turf injury) % scale. Data were collected at 7, 14, and 28 days after application (DAA). At no time during this study was tall fescue injury observed. At 4 weeks after treatment (WAT), applications of sulfentrazone at both rates provided > 95% control of Star-of-Bethlehem in trial one. Star-of-Bethlehem control following applications of quinclorac + sulfentrazone + 2,4-D + dicamba and sulfentrazone + 2,4-D+ MCPP+ dicamba was not significantly different from applications of sulfentrazone alone, at either rate, at 4 WAT. While carfentrazone-ethyl at 0.03 kg/ha provided 93% control at 2 WAT, control was reduced to 73% at 4 WAT. In trial two, Control following treatments with mesotrione + bromoxynil (93%) was significantly greater than mesotrione alone (61%) at 4 WAT. A similar response was also observed for topramezone alone (47%) and topramezone + bromoxynil (93%). These data suggest that sulfentrazone and mixtures of topramezone and mesotrione with bromoxynil can be used to provide postemergence control of Star-of-Bethlehem in cool season turf." |
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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):
Breeden, G., J. Brosnan, G. Armel, and J. Vargas. 2010. Postemergence herbicide mixtures for Star-of-Bethlehem control in cool-season turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 81. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=97
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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