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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=291
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Post, A.;
Askew, S.;
Spak, D. |
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| Author Affiliation: | Post and Askew: Virginia Tech, Blacksburg, VA; Spak: Bayer Environmental Science, Clayton, NC |
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| Title: | Transitioning overseeded bermudagrass fairways with SP 25052 |
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| Section: | Graduate student contest
Other records with the "Graduate student contest" Section
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| Meeting Info.: | Charleston, South Carolina: January 23-25, 2012 |
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| Source: | 2012 Proceedings, Southern Weed Science Society. Vol. 65, 2012, p. 219. |
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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: Cynodon dactylon; Golf fairways; Herbicide efficacy; Lolium perenne; Overseeding; Spring transition; Sulfonylurea herbicides; Temperature response
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| Trade Names: | SP 25052; Tribute Total |
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| Abstract/Contents: | "Spring transition to a pure stand of bermudagrass (Cynodon dactylon) after overseeding with perennial ryegrass (Lolium perenne) is typically accomplished with sulfonylurea herbicides such as foramsulfuron (Revolver, Bayer) or flazasulfuron (Katana). Transitioning from winter perennial ryegrass cover to bermudagrass can lead to thin turf stands and poor quality during spring and early summer. Sulfonylurea (SU) efficacy tends to increase with increasing temperatures so it is important to evaluate SU products in cooler temperatures since transition programs may be initiated in early spring. Two studies were initiated to evaluate Tribute Total™ effects on transitioning bermudagrass fairways. The objective of study 1 was to examine efficacy of Tribute Total™ for transitioning bermudagrass overseeded with perennial ryegrass. The objective of study 2 was to examine efficacy of Tribute Total™ for clumpy perennial ryegrass (Lolium perenne) control under cool temperature conditions. Study 1 was initiated June 20, 2011 in Blacksburg, Virginia on fairway height 'Tifway' bermudagrass maintained at 1.5cm. Tribute Total™ treatments included: 42, 85, and 127 g ai ha-1 + 0.5% v/v MSO, as well as the 127 g ai ha-1 rate with ammonium sulfate at 2% w/v. Two industry standards were included for comparison: foramsulfuron at 29 g ai ha-1 + 0.5% v/v MSO and flazasulfuron at 26 g ai ha-1 + 0.25% v/v NIS. Initial bermudagrass cover was 10 to 23%, perennial ryegrass cover was 30 to 33%, and 10-15 tiller smooth crabgrass cover was 30 to 40%. By 4 weeks after treatment (WAT), Tribute Total™ controlled perennial ryegrass 100% at all rates and equivalent to foramsulfuron and flazasulfuron. Tribute Total™ also controlled smooth crabgrass up to 43% 4 WAT and 27% 8 WAT which was significantly better than foramsulfuron. Study 2 was initiated March 25, 2011 in Blacksburg, Virginia on fairway height 'Patriot' bermudagrass maintained at 1.5cm. Treatments included Tribute Total™ at 42, 85, and 127 g ai ha-1 + 0.5% v/v MSO; foramsulfuron at 43 g ai ha-1 + 0.5% v/v MSO; and flazasulfuron at 26 and 53 g ai ha-1 + 0.25% v/v NIS. Daytime temperature at initiation was 42 F. Dormant bermudagrass cover ranged from 42-60% and perennial ryegrass cover ranged from 15-40%. Perennial ryegrass control was minimal from all treatments for the first 14 days and Tribute Total™ exhibited a rate response at 27, 42, and 55 days after treatment (DAT). The high rate of Tribute Total™ controlled perennial ryegrass the most at 56% 27 DAT. Minimal control from Tribute Total™ at this site is likely due to low soil temperature and should be studied further. Foramsulfuron controlled perennial ryegrass no more than 28%. Flazasulfuron controlled perennial ryegrass equivalent or better than foramsulfuron and Tribute Total™ all ratings. Flazasulfuron at either rate was the only treatment that completely controlled perennial ryegrass by 55 DAT." |
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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):
Post, A., S. Askew, and D. Spak. 2012. Transitioning overseeded bermudagrass fairways with SP 25052. South. Weed Sci. Soc. Proc. 65:p. 219. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=291
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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