Full TGIF Record # 225013
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=442
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Author(s):Main, C. L.; Robinson, D. K.; Teuton, T. C.; Mueller, T. C.
Author Affiliation:Department of Plant Sciences, University of Tennessee, Knoxville
Title:Management options for star-of-Bethlehem (Ornithagalum umbellatum L.) control in bermudagrass turf
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Meeting Info.:Memphis, Tennessee: January 26-28, 2004
Source:Proceedings: Southern Weed Science Society: 57th Annual Meeting. Vol. 57, 2004, p. 344.
# of Pages:1
Publishing Information:Champaign, Illinois: Southern Weed Science Society
Keywords:TIC Keywords: Cynodon dactylon; Herbicide efficacy; Herbicide evaluation; Ornithogalum umbellatum; Weed control
Abstract/Contents:"Star-of-Bethlehem is a perennial of the liliaceae (lily) family that is commonly confused with wild garlic (Allium canadense L.). Star-of-Bethlehem leaves are channeled, and are 3-8 mm wide with a conspicuous pale green to white midrib. Plants grow to a maximum height of 15-20 cm at flowering. Field studies were conducted near Knoxville, TN during late March and early April 2002 and 2003, respectively, for star-of-Bethlehem control in dormant bermudagrass turf. Plots (1.5 m by 4.5 m) were arranged on established common bermudagrass turf containing a uniform infestation of newly emerged star-of-Bethlehem (50 plants/m2). Herbicides evaluated for star-of-Bethlehem control included: bromoxynil at 1.24 kg ai/ha, halosulfuron at 0.07 kg ai/ha, imazaquin at 0.56 kg ai/ha, metsulfuron at 0.04 kg ai/ha, bromoxynil plus imazaquin, bromoxynil plus halosulfuron, bromoxynil plus metsulfuron, 2,4-D at 1.88 kg ai/ha plus dicamba at 1.0 kg ai/ha plus mecoprop at 0.20 kg ai/ha, and triclopyr at 1.62 kg ai/ha plus clopyralid at 0.54 kg ai/ha. A nontreated control was included for comparison and non-ionic surfactant at 0.25% v/v was included with treatments that contained halosulfuron, imazaquin, or metsulfuron. Herbicides were applied using a CO2-pressurized backpack sprayer that delivered 215 L/ha of water carrier with 11001 nozzles at 240 kPa. Treatments were arranged in a randomized complete block design with four replications of each treatment. Applications were made on April 3, 2002 and March 25, 2003 to dormant common bermudagrass turf. Star-of-Bethlehem was 8 to 10 cm tall when treated. Visual evaluations of star-of-Bethlehemcontrol and injury to bermudagrass turf (0% = no control or injury and 100% = complete control or turfgrass death) were recorded 21, 35, and 90 DAT. Halosulfuron, imazaquin, metsulfuron, 2,4-D plus dicamba plus mecoprop, and triclopyr plus clopyralid controlled star-of-Bethlehem 35% at most 35 days after treatment (DAT). Bromoxynil alone or mixed with halosulfuron, imazaquin, or metsulfuron controlled star-ofBethlehem at least 80% at 35 DAT. Imazaquin and imazaquin plus bromoxynil injured bermudagrass 51% 35 DAT. This injury was characterized by decreased bermudagrass postdormancy transition and was transient."
Note:"The changing world of weed science"
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Main, C. L., D. K. Robinson, T. C. Teuton, and T. C. Mueller. 2004. Management options for star-of-Bethlehem (Ornithagalum umbellatum L.) control in bermudagrass turf. South. Weed Sci. Soc. Proc. 57:p. 344.
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