Full TGIF Record # 227349
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=104
    Last checked: 08/12/2013
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Author(s):Hoyle, J. A.; Straw, C. M.; Henry, G. M.
Author Affiliation:University of Georgia, Athens, GA
Title:Sequential applications for the postemergence control of Virginia buttonweed
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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. 17.
# of Pages:1
Publishing Information:Champaign, Illinois: Southern Weed Science Society
Keywords:TIC Keywords: Application timing; Broadleaf weed control; Diodia virginiana; Herbicide evaluation; Postemergence weed control
Abstract/Contents:"Virginia buttonweed (Diodia virginiana) is a difficult to control broadleaf perennial weed. Field experiments were conducted at Pine Hills Golf Club in Winder, GA to examine the control of Virginia buttonweed in a common bermudagrass rough. The soil was an Appling sandy loam (Fine, kaolinitic, thermic Typic Kanhapludult). Research was conducted on a mature common bermudagrass rough maintained at a 4 cm height. Virginia buttonweed cover (60 to 95%) within each plot was determined at the time of initial herbicide application. Treatments were applied to plots (1.2 m x 1.5 m) arranged in a randomized complete block design with four replications. Treatments included a non-treated check, thiencarbazone + iodosulfuron + dicamba [Celsius] (0.17 kg ai ha-1), thiencarbazone + foramsulfuron + halosulfuron [Tribute Total] (0.13 kg ai ha-1), penoxsulam + dicamba [Lockup with Dicamba] (0.23 kg ai ha-1), metsulfuron [Blade] (42 g ai ha-1) + aminopyralid [Milestone] (88 g ae ha-1), 2,4-D + triclopyr + dicamba + pyraflufen [4-Speed XT] (1.64 kg ai ha-1), and thifensulfuron + tribenuron [TNT Broadleaf] (0.03 kg ai ha-1). Celsius, Tribute Total and 4-Speed XT were applied with a methylated seed oil (MSO) at 0.5% v/v. Blade + Milestone and TNT Broadleaf applications included a non-ionic surfactant (NIS) at 0.25% v/v. Initial applications were conducted on 16 July 2012 and sequential applications were made 4 weeks later (14 August 2012) using the same rates. Treatments were applied using a CO2 pressurized backpack sprayer equipped with XR8004VS nozzle tips calibrated to deliver 375 L ha-1 at 221 kPa. Virginia buttonweed cover was visually evaluated 1, 2, 3, 4, 5, 6, 8 and 10 weeks after initial treatment (WAIT). Percent Virginia buttonweed control for each treatment was calculated relative to initial Virginia buttonweed cover. Analysis of variance was performed in SAS and means were separated according to Fisher's protected LSD at the 0.05 significance level. Lockup with Dicamba, Blade + Milestone, and 4-Speed XT controlled Virginia buttonweed greater than 75% at 2 WAIT. At 4 WAIT, Blade + Milestone resulted in 100% Virginia buttonweed control. Similar Virginia buttonweed control was observed at 4 WAIT with Celsius and 4-Speed XT, 87% and 81%, respectively. After application of sequential treatments all herbicidal treatments resulted in excellent Virginia buttonweed control (>= 92%) excluding TNT Broadleaf (< 48%) 10 WAIT."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hoyle, J. A., C. M. Straw, and G. M. Henry. 2013. Sequential applications for the postemergence control of Virginia buttonweed. South. Weed Sci. Soc. Proc. 66:p. 17.
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http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=104
    Last checked: 08/12/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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