Full TGIF Record # 139383
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Web URL(s):https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/14462f.pdf
    Last checked: 02/06/2017
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Author(s):Umeda, K.; Towers, G.
Title:Timing of sequential applications for nutsedge control in turfgrass
Section:Turf: Weed control
Other records with the "Turf: Weed control" Section
Source:2007-2008 Turfgrass, Landscape and Urban IPM Research Summary [Arizona]. January 2008, p. 30-34.
# of Pages:5
Publishing Information:Tucson, AZ: University of Arizona College of Agriculture & Life Sciences
Keywords:TIC Keywords: Cyperus rotundus; Acetolactate synthase; Herbicide application; Halosulfuron; Flazasulfuron; Trifloxysulfuron; Sulfosulfuron; Imazaquin
Abstract/Contents:"Sequential applications of all of the ALS-inhibiting herbicides offered acceptable to excellent levels of nutsedge control in turf. Single applications generally provided nutsedge control for 2 to 6 weeks. Single applications of halosulfuron and flazasulfuron offered effective control for 2 weeks and less than 4 weeks. Effective nutsedge control by trifloxysulfuron and sulfosulfuron was observed at 31 days after treatment (DAT) and began to decline at 42 DAT. Sulfosulfuron at 0.094 lb a.i./A applied sequentially at either 4 or 6 weeks gave near complete at the end of the season at the end of September. A second application of trifloxysulfuron at 0.026 lb a.i./A at 4 or 6 weeks after a first application in mid-July resulted in controlling nutsedge better than 85% at the end of September. Flazasulfuron at 0.047 lb a.i./A applied sequentially at 6 weeks provided improving nutsedge control through the summer and resulted in near complete control at 95% at the end of September. Halosulfuron at 0.062 lb a.i./A showed only 65% control after the first application and a sequential application at 4 weeks improved control to 92% for only an additional 2 weeks and then control was less than acceptable at the end of the season. Imazaquin at 0.5 lb a.i/A gave less than acceptable but consistent control until sequential applications at both 4 and 6 weeks improved nutsedge control to acceptable levels."
Note:"Published January 2008"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Umeda, K., and G. Towers. 2008. Timing of sequential applications for nutsedge control in turfgrass. Turfgrass Landscape Urban IPM Res. Summ. p. 30-34.
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    Last checked: 02/06/2017
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