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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=259
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Breeden, G. K.;
Brosnan, J. T. |
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| Author Affiliation: | University of Tennessee, Knoxville, TN |
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| Title: | Herbicide options for Star-of-Bethlehem (Ornithogalum umbellatum) control |
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| Section: | Turf and ornamental weed control
Other records with the "Turf and ornamental weed control" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 189. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Golf greens; Herbicide evaluation; Ornithogalum umbellatum; Postemergence weed control
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| Abstract/Contents: | "Star-of-Bethlehem (Ornithogalum umbellatum) is a perennial ornamental plant that can be a troublesome weed in many turf areas, including golf courses, athletic fields, and residential landscapes. Few herbicides have activity against Star-of-Bethlehem, with non-selective herbicides like glyphosate often exhibiting inconsistent activity. Reports suggest that new protoporhyrinogen oxidase (PPO) inhibiting herbicides, such as carfentrazone and sulfentrazone, may offer improved activity against Star-of-Bethlehem; however, research data supporting these claims is limited. Field research was initiated in the spring of 2008 to evaluate the efficacy of various turf herbicides including carfentrazone and sulfentrazone for postemergence control of Star-of-Bethlehem. Research was 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 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). All treatments were applied on 7 April 2008 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, with greater than 70% control considered acceptable. Data was collected at 7, 14, and 28 days after application (DAA). At no time in this study was tall fescue injury observed. Carfentrazone at 35 g ai/ha and sulfentrazone at rates of 280 and 420 g ai/ha controlled Star-of-Bethlehem >=82% at 7 DAA. All other treatments controlled Star-of-Bethlehem <= 48% at 7 DAA. Bromoxynil at 560 g ai/ha, carfentrazone at 35 g ai/ha, and sulfentrazone at rates of 280 and 420 g ai/ha controlled Star-of-Bethlehem >=93% at 14 DAA. Quinclorac + sulfentrazone + 2,4-D + dicamba at 1730 g ai/ha and sulfentrazone + 2,4-D+ MCPP+ dicamba at 1220 g ai/ha controlled Star-of-Bethlehem 82 and 77%, respectively at 14 DAA. Control for all treatments decreased to <=72% at 28 DAA, except for sulfentrazone at rates of 280 and 420 g ai/ha, which measured >=95% at 28 DAA. These data suggest applications of sulfentrazone at rates of 280 and 420 g ai/ha can provide postemergence control of Star-of-Bethlehem in established tall fescue 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. K., and J. T. Brosnan. 2009. Herbicide options for Star-of-Bethlehem (Ornithogalum umbellatum) control. South. Weed Sci. Soc. Proc. 62:p. 189. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=259
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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