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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=395
Last checked: 08/06/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Elmore, Matthew T.;
Brosnan, James T.;
McCullough, Patrick E.;
Breeden, Gregory K. |
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| Author Affiliation: | Elmore, Brosnan and Breeden: University of Tennessee, Knoxville; McCullough: University of Georgia, Griffin |
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| Title: | Tall fescue and perennial ryegrass re-seeding intervals for amicarbazone |
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| Meeting Info.: | San Juan, Puerto Rico: January 24-26, 2011 |
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| Source: | 2011 Proceedings, Southern Weed Science Society. Vol. 64, 2011, p. 287. |
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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: Amicarbazone; Application rates; Cultivar evaluation; Establishment; Festuca arundinacea; Herbicide evaluation; Lolium perenne; Seeding
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| Cultivar Names: | Titan; Manhattan |
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| Abstract/Contents: | "The photosystem II-inhibiting herbicide amicarbazone exhibits efficacy against annual bluegrass (Poa annua L.) and safety to cool-season turfgrasses when applied in spring. Re-seeding desirable turfgrass species into voids created after annual bluegrass eradication by amicarbazone may be necessary. In 2010, experiments were initiated at the University of Tennessee (Knoxville, TN) and the University of Georgia (Griffin, GA) to evaluate the effects of residual amicarbazone on tall fescue (Festuca arundinacea Schreb.) and perennial ryegrass (Lolium perenne L.) establishment. Separate tall fescue and perennial ryegrass establishment experiments were conducted from March to June 2010 at each location. Plots (1 x 1.8 m) arranged in a randomized complete block design with four replications were treated with amicarbazone (0.1, 0.2 or 0.4 kg ha-1) + NIS (0.25 % v/v) or bispyribac-sodium (0.1 kg ha-1) t 0, 2, 4, or 6 weeks before seeding (WBS). Treatments were applied with CO2-powered sprayers calibrated to deliver 280 or 375 L ha-1 in TN and GA, respectively. An untreated check was included for comparison. One week prior to seeding, glyphosate (2.2 kg ha-1) was applied at each location to eradicate existing vegetation. On the day of seeding, all plots were scalped to 3.8 cm, vertically mowed, and seeded with 'Titan' tall fescue or 'Manhattan' IV perennial ryegrass at 380 kg ha-1. A 10-10-10 fertilizer was applied 4 weeks after seeding (WAS) at each location. Tall fescue and perennial ryegrass cover were evaluated as a percent of the untreated at 2 and 4 WAS in GA and 2, 4 and 8 WAS in TN. Tall fescue and perennial ryegrass cover averaged 96% of the untreated control for all treatments applied 2, 4 and 6 WBS. No differences in turfgrass cover were detected among herbicide treatments applied 2, 4 and 6 WBS at either location on any rating date. Significant reductions in tall fescue and perennial ryegrass cover were observed 4 WAS at both locations for treatments applied 0 WBS. In GA, bispyribac-sodium and amicarbazone at 0.4 kg ha-1 applied 0 WBS reduced perennial ryegrass cover to 58% of the untreated control 4 WAS; however, amicarbazone applied 0 WBS at 0.1 and 0.2 kg ha-1 1 did not significantly reduce cover compared to the untreated control. In TN, bispyribac-sodium applied 0 WBS reduced perennial ryegrass cover to 44% of the untreated control 4 WAS; however, no amicarbazone treatment applied at 0 WBS reduced perennial ryegrass cover. Trends observed with tall fescue cover 4 WAS were similar to those observed with perennial ryegrass at each location. Responses illustrate that amicarbazone can be safely applied at rates up to 0.4 kg ha-1 at 2, 4 or 6 WBS and up to 0.2 kg ha-1 0 WBS perennial ryegrass and tall fescue. When applied at 0.4 kg ha-1 0 WBS, amicarbazone may reduce tall fescue and perennial ryegrass establishment similar to bispyribac-sodium at 0.1 kg ha-1." |
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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):
Elmore, M. T., J. T. Brosnan, P. E. McCullough, and G. K. Breeden. 2011. Tall fescue and perennial ryegrass re-seeding intervals for amicarbazone. South. Weed Sci. Soc. Proc. 64:p. 287. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=395
Last checked: 08/06/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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