Full TGIF Record # 227338
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=96
    Last checked: 08/12/2013
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Author(s):Straw, C. M.; Hoyle, J. A.; Henry, G. M.
Author Affiliation:University of Georgia, Athens, GA
Title:Alternatives to metsulfuron for the postemergence control of bahiagrass
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Meeting Info.:Houston, Texas: January 28-30, 2013
Source:Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 9.
# of Pages:1
Publishing Information:Champaign, Illinois: Southern Weed Science Society
Keywords:TIC Keywords: Comparisons; Herbicide evaluation; Herbicide resistance; Metsulfuron methyl; Paspalum notatum; Postemergence weed control
Abstract/Contents:"The occurrence of bahiagrass hybridization in nature may lead to an increase in tolerance to postemergence applications of metsulfuron. Therefore, field experiments were conducted at the University of Georgia Plant Sciences Research Farm (Watkinsville, GA) to examine alternatives to metsulfuron for the postemergence control of bahiagrass (Paspalum notatum) in bermudagrass. Research was conducted on a mature common bermudagrass [Cynodon dactylon (L.) Pers.] roadside maintained at a 5 cm height. Herbicide treatments were applied on July 16, 2012 and consisted of a non-treated check, metsulfuron at 0.021 or 0.042 kg ai ha-1, thiencarbazone + iodosulfuron + dicamba at 0.176 kg ai ha-1, metsulfuron + aminopyralid at 0.042 kg ai ha-1 + 0.088 kg ae ha-1, metsulfuron + nicosulfuron at 0.042 + 0.035 kg ai ha-1, and trifloxysulfuron at 0.028 kg ai ha-1. Each treatment included a nonionic surfactant at 0.25% v/v. Treatments were applied to 1.5 x 1.5 m plots arranged in a randomized complete block with four replications. Applications were made with a CO2 powered boom sprayer equipped with XR8004VS nozzle tips calibrated to deliver 375 L ha-1 at 221 kPa. Percent bahiagrass cover was recorded visually at 4 and 10 weeks after treatment (WAT) on a scale of 0 to 100%. Percent bahiagrass control for each treatment was calculated by comparing each plot back to initial bahiagrass cover recorded prior to herbicide applications. No bermudagrass phytotoxicity was observed throughout the length of the trial, regardless of treatment. Bahiagrass control was 41% to 63% 4 WAT, regardless of treatment. Bahiagrass control with thiencarbazone + iodosulfuron + dicamba and trifloxysulfuron was reduced to 14% and 37% 10 WAT, respectively. Applications of metsulfuron + aminopyralid and metsulfuron at 0.021 kg ai ha-1 resulted in 73% and 80% bahiagrass control, respectively. The greatest level of bahiagrass control 10 WAT was observed in response to metsulfuron + nicosulfuron (93%) and metsulfuron at 0.042 kg ai ha-1 (95%)."
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Straw, C. M., J. A. Hoyle, and G. M. Henry. 2013. Alternatives to metsulfuron for the postemergence control of bahiagrass. South. Weed Sci. Soc. Proc. 66:p. 9.
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http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=96
    Last checked: 08/12/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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