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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2012.pdf#page=112
Last checked: 10/27/2015
Requires: PDF Reader
http://wssaabstracts.com/public/11/abstract-102.html
Last checked: 09/17/2012 |
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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. K.;
Brosnan, J. T.;
McCullough, P. |
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| Author Affiliation: | University of Tennessee, Knoxville, TN |
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| Title: | Tall fescue (Festuca arundinacea) tolerance to spring and fall amicarbazone applications |
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| Meeting Info.: | Philadelphia, PA: January 3-6, 2012 |
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| Source: | Proceedings: 66th Annual Meeting of the Northeastern WeedScience Society. Vol. 66, 2012, p. 101. |
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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: Amicarbazone; Application timing; Bispyribac-sodium; Festuca arundinacea; Herbicide evaluation; Herbicide injury
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| Cultivar Names: | Coyote II |
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| Abstract/Contents: | "Amicarbazone is a new photosystem II inhibitor being evaluated for use in cool-season turfgrass. Data describing cool-season turfgrass tolerance to amicarbazone are limited. Research was conducted from 2010 to 2011 evaluating tall fescue (Festuca arundinacea) tolerance to spring and fall to applications of amicarbazone. Separate trials were conducted to determine tolerance to spring and fall amicarbazone applications. The site for each trial was a mature stand of 'Coyote II' tall fescue maintained as a golf course rough at the East Tennessee Research and Education Center-Plant Sciences Unit (Knoxville, TN). Plots (1.5 by 3 m) were arranged in a randomized complete block design with three replications. Amicarbazone (98 g ha-1, 196 g ha-1 and 392 g ha-1) and bispyribac-sodium (111 g ha-1) were applied sequentially on a two-week interval. An untreated control was included for comparison. Four application timings were evaluated in the fall trial: September, October, November, and December. The same treatments were applied in the spring trial in March and April. All herbicides 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. Tall fescue injury was evaluated visually utilizing a 0 (no turf injury) to 100% (complete kill) scale at 7, 14, 28 49, 62, 91, and 144 days after initial treatment (DAIT). Injury present 21 DAIT with amicarbazone at >=196 g ha-1 ranged from 40 to 92% for treatments in September and October. By 66 DAIT, tall fescue injury with these treatments was >40%. Applied in November and December, these treatments induced 20 to 60% injury 21 DAIT. Applications of amicarbazone at 98 g ha-1 in November injured tall fescue from 0 to 36% at 21 DAIT. By 144 DAIT, amicarbazone at < 196 g ha-1 in September, October, and November injured tall fescue <= 8%. At 392 g ha-1 these treatments injured tall fescue >=85% at 144 DAIT. Bispyribac-sodium applied at all fall timings injured tall fescue <=42% at 28 DAIT. By 62 DAIT, bispyribac-sodium in September and December injured tall fescue <=3%, while October and November applications injured tall fescue <=38%. Spring applications were less injurious to tall fescue as no injury was observed with amicarbazone at 98 and 196 g ha-1 in March. Amicarbazone at 392 g ha-1 in March injured tall fescue 25% by 49 DAIT, but declined to 0% by 91 DAIT. Injury with April applications of amicarbazone at <=196 g ha-1 ranged from 0 to 12%, with no injury present 21 days after application. Amicarbazone at 392 g ha-1 in April injured tall fescue 50% by 28 DAIT. By 62 DAIT injury had decreased to <=23%. Comparatively, bispyribac-sodium at all spring application timings injured tall fescue <=25% through the end of the study. These data suggest that fall applications of amicarbazone should be avoided on tall fescue, while spring amicarbazone applications at <=196 g ha-1do not result in significant tall fescue injury." |
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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., J. T. Brosnan, and P. McCullough. 2012. Tall fescue (Festuca arundinacea) tolerance to spring and fall amicarbazone applications. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 66:p. 101. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2012.pdf#page=112
Last checked: 10/27/2015
Requires: PDF Reader
http://wssaabstracts.com/public/11/abstract-102.html
Last checked: 09/17/2012 |
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MSU catalog number: SB 610 .N62 |
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