Full TGIF Record # 148847
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Web URL(s):http://www.turf.uconn.edu/pdf/research/reports/2008.pdf#page=116
    Last checked: 06/09/2009
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Kaminski, J. E.
Author Affiliation:Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, Connecticut
Title:Postemergent control of false green kyllinga in southern New England
Section:Scientific publications (abstracts & citations)
Other records with the "Scientific publications (abstracts & citations)" Section
Source:2008 Turfgrass Research Report [Connecticut]. 2009, p. 113.
# of Pages:1
Publishing Information:Storrs, CT: Department of Plant Science, University of Connecticut
Keywords:TIC Keywords: Herbicide efficacy; Herbicide evaluation; Herbicide recommendations; Kyllinga gracillima; Postemergence weed control
Abstract/Contents:"Although uncommon in New England, a severe infestation of false green kyllinga (Kyllinga gracillima L.; FGK) has been observed for several years on a golf course located in southwestern Connecticut. No information currently is available with regards to postemergent control of this weed species in the northeastern United States. The objectives of this study were to determine the ability of single and sequential postemergent (POST) applications of sulfentrazone, mesotrione, halosulfuron-methyl and carfentrazone to control mature FGK. A field study was conducted in a golf course rough at Burning Tree Country Club in Greenwich, CT. The site was dominated by Kentucky bluegrass (Poa pratensis L.), but also contained small percentages of annual bluegrass (Poa annua L.) and perennial ryegrass (Lolium perenne L.). All sites were mowed approximately 2 times per week to a height of 2.0 inches. Sulfentrazone (0.125, 0.188, 0.250 lb ai/A), mesotrione (0.125, 0.188, and 0.250 lb ai/A), halosulfuron-methyl (0.021, 0.031, and 0.062 lb ai/A), and carfentrazone (0.013, 0.038, and 0.099 lb ai/A), and halosulfuron-methul + carfentrazone (0.021 lb ai/A + 0.038 lb ai/A) were applied on 3 June. In addition to the single application treatments, sequential applications of sulfentrazone and mesotrione also were applied on 24 June. All mesotrione, carfentrazone, and halosulfuron-methyl treatments were applied with the non-ionic surfactant X-77 at 0.25% (v/v). All treatments were applied in 44 gpa using a CO2 pressurized (40psi) sprayer equipped with a flat-fan nozzle. Plots measured 3 ft x 6 ft and were arranged in a randomized complete block design with 4 replications. Control of FGK was rated periodically throughout the study on a percent scale where 0 = no visible FGK and 100 = entire plot area covered with FGK. Shortly after the initial application, all treatments except carfentrazone resulted in injury to the FGK. Recovery of FGK, however, was observed in all plots receiving only a single herbicide application by the final rating date (18 September). On 18 September, there were no differences in FGK populations among single application treatments and the untreated control. Plots receiving sequential applications of sulfentrazone (0.188 and 0.250 lb ai/A) and mesotrione (0.250 lb ai/A) resulted in good (78 to 86%) suppression of FGK. Our results suggest that sequential applications of mesotrione or sulfentrazone at higher rates likely is necessary when attempting to control mature FGK in the northeaster United States. The long term efficacy of these herbicides on the regeneration of FGK in subsequent years, however, remains unknown."
Note:This item is an abstract only!
Geographic Terms:Southern New England
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kaminski, J. E. 2009. Postemergent control of false green kyllinga in southern New England. 2008 Turfgrass Res. Rep. [CT]. p. 113.
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    Last checked: 06/09/2009
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    Notes: Item is within a single large file
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