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Web URL(s):http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=95
    Last checked: 07/23/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Barker, W. L.; Askew, S. D.; Beam, J. B.
Author Affiliation:Virginia Tech, Blacksburg, Virginia
Title:Overseeded ryegrass to bermudagrass transition with new sulfonylurea herbicides
Section:Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
Meeting Info.:Hyatt Regency Hotel, Baltimore, MD: January 6-9, 2003
Source:Proceedings of the 57th Annual Meeting of the NortheasternWeed Science Society. Vol. 57, 2003, p. 95.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Cynodon dactylon; Herbicide efficacy; Herbicide evaluation; Lolium perenne; Sulfonylurea herbicides; Transitional overseeding
Abstract/Contents:"Typically, bermudagrass (Cynodon dactylon (L.) Pers.) fairways are overseeded with perennial ryegrass (Lolium perenne L.) in early fall within the climatic transition zone to maintain a green surface throughout the year. To promote optimal post-dormancy bermudagrass growth and development, perennial ryegrass should be controlled in the spring. Currently in the US, three sulfonylurea herbicides (chlorsulfuron, metsulfuron, and rimsulfuron) are registered for use in established bermudagrass to control overseeded perennial ryegrass or other weedy grasses. In addition, three other sulfonylurea herbicides (flazasulfuron, foramsulfuron, and trifloxysulfuron) are under evaluation for possible registration in the US. Six field trials were conducted at three locations in 2002 to evaluate differential perennial ryegrass control and bermudagrass injury from the herbicides flazasulfuron, foramsulfuron, metsulfuron, rimsulfuron, and trifloxysulfuron. Studies were conducted as randomized complete block designs with four replications at Keswick Club in Keswick VA, London Downs Golf Club in Forest, VA, and the Turfgrass Research Center in Blacksburg, VA. Treatments in one study included different rates of flazasulfuron (9, 18, 26, 39, and 53 g ai/ha) compared to a single rate of metsulfuron (21.0 g ai/ha). In another study, five foramsulfuron treatments were compared to metsulfuron at 21 g ai/ha, rimsulfuron at 18 g ai/ha, and trifloxysulfuron at 10 g ai/ha. Foramsulfuron was applied alone at 15, 30, and 45 g ai/ha or at 30 g ai/ha with methylated seed oil adjuvant (MSO) at 1% (v/v) or MSO + urea ammonium nitrate at 30% v/v. In both studies, all herbicide treatments except foramsulfuron included nonionic surfactant at 0.25% v/v. Nontreated controls were also included in each study for comparison. Flazasulfuron rate did not influence perennial ryegrass control at most evaluation times. Regardless of location, foramsulfuron, flazasulfuron, metsulfuron, rimsulfuron, and trifloxysulfuron controlled perennial ryegrass at least 90% 4 weeks after treatment (WAT). Bermudagrass injury was less than 20% throughout the experiments. All herbicide treatments increased bermudagrass coverage between 20 and 47% 12 WAT. At London Downs, mature annual bluegrass (Poa annua L.) control was assessed. The herbicides evaluated controlled annual bluegrass in the following order: foramsulfuron ≥ rimsulfuron > trifloxysulfuron > flazasulfuron ≥ metsulfuron. Results indicate all of these herbicides can successfully aid bermudagrass post-dormancy transition by controlling perennial ryegrass."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Barker, W. L., S. D. Askew, and J. B. Beam. 2003. Overseeded ryegrass to bermudagrass transition with new sulfonylurea herbicides. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 57:p. 95.
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http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=95
    Last checked: 07/23/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 610 .N62 v. 57
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