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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=200
    Last checked: 07/18/2013
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Publication Type:
i
Report
Author(s):White, J. L. Jr.; Waltz, F. C. Jr.; Murphy, T. R.
Author Affiliation:The University of Georgia, Griffin, GA
Title:Bermudagrass control in centipedegrass with triclopyr combinations
Section:Weed management in turf grass
Other records with the "Weed management in turf grass" Section
Meeting Info.:San Antonio, Texas: January 23-25, 2006
Source:Proceedings: Southern Weed Science Society 59th Annual Meeting. Vol. 59, 2006, p. 127.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Bermudagrass control; Eremochloa ophiuroides; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Triclopyr
Abstract/Contents:"Bermudagrass (Cynodon dactylon (L.) Pers.) can be a problematic weed in centipedegrass (Eremochloa ophiuroides (Munro)Hack.) for homeowners, sod producers, and landscapers. Bermudagrass can be difficult to control because of its deep rhizomes and its aggressive growth habit. Several postemergence herbicides can temporarily suppress bermudagrass growth, but repeated applications are needed for long-term control. Field studies were conducted in Griffin, GA to evaluate the effectiveness of triclopyr and sethoxydim combinations to suppress bermudagrass in centipedegrass. Three herbicide applications were applied to a established centipedegrass stand at 4 week intervals starting on June 27, 2005. The single and tank mix herbicide rates were sethoxydim (0.28 lb ai/a), triclopyr (0.5 lb ai/a), triclopyr (1 lb ai/a), sethoxydim (0.28 lb ai/a) + triclopyr (0.5 lb ai/a), and sethoxydim (0.28 lb ai/a) + triclopyr (1 lb ai/a). A non-treated control was also included. Treatments were applied to 5 feet by 10 feet plots with a CO2 backpack sprayer set to deliver at 25 gpa.. The study was replicated four times in a randomized complete block design. Weekly measurements of turfgrass color and turfgrass quality were taken using a 1-9 scale where 1= dead brown turfgrass, 6 = minimally acceptable turfgrass, and 9 = dark green turfgrass. Other assessments included percent bermudagrass density and control and Virginia buttonweed control. At the rates tested, multiple applications of sethoxydim and sethoxydim + triclopyr provided bermudagrass suppression 53 days after sequential applications. In general, these treatments were noninjurious to centipedegrass. However at two weeks after the second application, triclopyr at 1 lb ai/a and tank mix combinations had a maximum injury of 15%. Bermudagrass control was improved with multiple applications, however, the addition of triclopyr to sethoxydim increased bermudagrass control at only one rating date after the first application. Following subsequent treatments, there was no improvement on bermedagrass control when triclopyr was tank mixed with sethoxydim. Applied at four week intervals, season-long Virginia buttonweed control was achieved with any treatment containing either rate of triclopyr. From this one-year study it is difficult to determine the multi-year effectiveness of sethoxydim and triclopyr tank mix combinations. Since centipedegrass had good tolerance to the tank mix combination, sethoxydim and triclopyr may be used when bermudagrass and broadleaf weeds are present in a centipedegrass stand."
Language:English
References:0
Note:"Vision for the future"
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
White, J. L. Jr., F. C. Jr. Waltz, and T. R. Murphy. 2006. Bermudagrass control in centipedegrass with triclopyr combinations. South. Weed Sci. Soc. Proc. 59:p. 127.
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http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=200
    Last checked: 07/18/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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