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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=343
Last checked: 08/12/2013
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. |
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| Author Affiliation: | University of Tennessee, Knoxville, TN |
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| Title: | Topramezone for bermudagrass (Cynodon dactylon) control in tall fescue (Festuca arundinacea) |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Houston, Texas: January 28-30, 2013 |
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| Source: | Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 256. |
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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: Application timing; Cynodon dactylon; Festuca arundinacea; Herbicide efficacy; Herbicide evaluation; Interseeding; Topramezone; Weed control
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| Abstract/Contents: | "Common bermudagrass (Cynodon dactylon) is a problematic weed of tall fescue (Festuca arundinacea) turfgrass. Topramezone is a new hydroxyphenylpyruvate dioxygenase (HPPD) inhibiting herbicide being evaluated for use in cool-season turfgrass. Field research was conducted from 2010 to 2012 in Knoxville, TN evaluating the efficacy of sequential applications of topramezone, triclopyr, and mixtures of topramezone-plus-triclopyr for bermudagrass control in tall fescue turf. Field research was conducted on a mature stand of tall fescue (Festuca arundinacea) infested with common bermudagrass (Cynodon dactylon) at the East Tennessee Research and Education Center in Knoxville, TN. Plots (1.5 by 3 m) were maintained as a golf course rough and arranged in a strip-plot with three replications. Whole plot treatments included sequential applications of topramezone (12.5 and 25 g ha-1), triclopyr (1120 g ha-1), mixtures of topramezone-plus-triclopyr and fenoxaprop-plus-triclopyr (100 + 1120 g ha-1). Three applications of each treatment were applied on a 21 d interval during July, August, and September of 2010 and 2011. Plots were stripped to receive tall fescue interseeding at 0 or 490 kg ha-1 during September 2010 and 2011. Treatments in all trials were applied with a CO2 powered boom sprayer calibrated to deliver 280.5 L ha-1 utilizing four, flat-fan, 8002 nozzles at 124 kPa, configured to provide a 1.5-m spray swath. Weed control and turf injury were visually evaluated in all trials utilizing a 0 (i.e., no weed control or turf injury) to 100 % (i.e., complete weed control or turf injury) scale at 2, 5, 8, and 14 weeks after initial treatment (WAIT). Bermudagrass control data and grid counts were also collected from each sub-plot 52 WAIT each year to determine long-term control efficacy and effects of interseeding. At no time during these studies was tall fescue injury observed. Bermudagrass control with topramezone-plus-triclopyr mixtures was greater than topramezone or triclopyr applied alone at 5, 8, and 14 WAIT each year. After two years of applications, topramezone-plus-triclopyr mixtures controlled bermudagrass 27 to 50%. However, bermudagrass control with topramezone-plus-triclopyr mixtures increased to 88 to 92% 52 WAIT when accompanied with tall fescue interseeding at 490 kg ha-1. These data suggest that sequential applications of topramezone-plus-triclopyr can be utilized to manage bermudagrass and these applications in combination with interseeding tall fescue can increase bermudagrass control when compared to herbicide applications alone." |
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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. Brosnan. 2013. Topramezone for bermudagrass (Cynodon dactylon) control in tall fescue (Festuca arundinacea). South. Weed Sci. Soc. Proc. 66:p. 256. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=343
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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