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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=202
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Warren, L. S.;
Murphy, T. R.;
Gannon, T. W.;
Yelverton, F. H. |
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| Author Affiliation: | Warren, Gannon and Yelverton: Crop Science Department, North Carolina State University, Raleigh, NC; Murphy: Crop and Soil Sciences, University of Georgia, Griffin, GA |
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| Title: | Dallisgrass control with MSMA and timings of sulfosulfuron and foramsulfuron |
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| Section: | Weed management in turfgrass
Other records with the "Weed management in turfgrass" Section
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| Meeting Info.: | San Antonio, Texas: January 23-25, 2006 |
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| Source: | Proceedings: Southern Weed Science Society 59th Annual Meeting. Vol. 59, 2006, p. 129. |
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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; Dallisgrass control; Foramsulfuron; Herbicide efficacy; Herbicide evaluation; MSMA; Paspalum dilatatum; Sulfosulfuron
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| Abstract/Contents: | "Trials were conducted in NC and GA to study the effects of sulfosulfuron and combinations of msma with sulfosulfuron or foramsulfuron on dallisgrass control in common bermudagrass. NC treatments were initiated on May 2, 2005 at Garner Country Club and applied at 97.5 gpa. GA treatments were initiated on May 24, 2005 at Cabin Creek Golf Club and applied at 75 gpa. Dallisgrass plot coverage at the NC and GA locations was 70% and 50%, respectively, at trial initiation. The following two treatments consisted of two applications spaced 6 wk apart: 1) sulfosulfuron at 1.25 oz/A per application and 2) sulfosulfuron at 1.25 oz/A tank mixed with msma at 2 lb ai/A per application. Four treatments consisted of 2 lb ai/A msma followed by (fb) a 2-wk interval sequential of sulfosulfuron at rates of 1.25, 2.5, 5 and 10 oz/A fb a 2-wk interval sequential of 2 lb ai/A msma. One NC treatment included 2 lb ai/A msma fb a 2-wk interval sequential of foramsulfuron at 1 oz/1000 ft2 fb a 1-wk interval sequential of 2 lb ai/A msma. This GA treatment was applied at 2-wk intervals. There was also a nontreated check. Sulfosulfuron received a nonionic surfactant at 0.25% v/v. The msma formulations used in NC and GA contained surfactant, so no extra was added. Dallisgrass control data are presented from visual observations taken 2, 4, 6, 8, 12 and 16 WA initial application. Data are pooled over locations when appropriate, with means separated using Fishers Protected LSD at P = 0.05. Two applications of 1.25 oz/A sulfosulfuron did not control dallisgrass (<4%) at either location. At 2 WAIT, one application of msma or the sulfosulfuron + msma tank mix provided 34 to 42% dallisgrass control in NC and 61% control in GA. By 4 WAIT, the msma applications had been fb the various sulfosulfuron rates of 1.25, 2.5, 5 and 10 oz/A. At the GA location, none of the sequential sulfosulfuron treatments added to msma increased control over the initial sulfosulfuron + msma tank mix. Dallisgrass control ranged from 60 to 66% for these treatments. There was a sulfosulfuron rate response at the NC location. Msma fb 10 oz/A sulfosulfuron provided 63% dallisgrass control, while the msma treatment fb 1.25 oz/A sulfosulfuron controlled dallisgrass 35%. A possible explanation for the reduced control in NC with the 1.25 oz/A rate of sulfosulfuron was the below average temperature in May. The average temperature for all May applications was 72.5°F in 2005, while the historical average temperature for the month is 82.4°F. The sulfosulfuron label states that best activity occurs in warm, moist conditions. All sequential treatments consisting of msma fb sulfosulfuron or foramsulfuron fb msma were completed by 6 WAIT. At both locations, 89% dallisgrass control was observed with msma fb foramsulfuron fb msma. Msma fb 10 oz/A sulfosulfuron fb msma provided 84% control, which was greater than the 76 to 77% dallisgrass control provided by msma fb 1.25 or 2.5 oz/A sulfosulfuron fb msma. One application of the sulfosulfuron + msma tank mix resulted in only 9% dallisgrass control at this time. All treatments were completed by 8 WAIT, with a 1-inch rain falling 12 hr after the last GA application. Two applications of the sulfosulfuron + msma tank mix treatment provided 87% dallisgrass control at both locations. Similar control of 54 to 68% was observed with all treatments consisting of msma fb sulfosulfuron or foramsulfuron fb msma except when the sulfosulfuron rate was 2.5 oz/A (43%). This low control could not be explained. At 12 WAIT, 85% dallisgrass control occurred in NC with the sulfosulfuron + msma tank mix applied twice. Msma fb foramsulfuron fb msma resulted in 44% control, and all remaining treatments provided <19% control. In GA, similar dallisgrass control occurred (60 to 65%) with the sulfosulfuron + msma tank mix applied twice and msma fb foramsulfuron fb msma. All treatments consisting of msma fb sulfosulfuron fb msma resulted in 40 to 44% control except when the sulfosulfuron rate was 2.5 oz/A (19% dallisgrass control) which could not be explained. Final dallisgrass control in NC at 16 WAIT was best (78%) with the tank mix of sulfosulfuron + msma applied twice. Msma fb foramsulfuron fb msma provided 30% control, and all remaining treatments resulted in <17% control. In GA, similar dallisgrass control of 51 to 61% was recorded with the tank mix of sulfosulfuron + msma applied twice and also msma fb foramsulfuron fb msma. All msma fb sulfosulfuron fb msma treatments resulted in 36 to 40% dallisgrass control except when the sulfosulfuron rate was 2.5 oz/A (8%) and could not be explained." |
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| Language: | English |
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| References: | 0 |
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| Note: | "Vision for the future"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Warren, L. S., T. R. Murphy, T. W. Gannon, and F. H. Yelverton. 2006. Dallisgrass control with MSMA and timings of sulfosulfuron and foramsulfuron. South. Weed Sci. Soc. Proc. 59:p. 129. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=202
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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