Full TGIF Record # 225581
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=210
    Last checked: 07/24/2013
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i
Report
Author(s):Brewe, A. N.; Medlin, C. R.; Rupp, R. N.; Castner, E. P.
Author Affiliation:Oklahoma State University, Stillwater, OK and DuPont Crop Protection, Wilmington, DE
Title:Efficacy and bermudagrass response to nicosulfuron and diuron
Section:Weed management in pastures & rangeland
Other records with the "Weed management in pastures & rangeland" Section
Meeting Info.:Jacksonville, Florida: January 27-30, 2008
Source:2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 160.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Cenchrus spinifex; Cynodon; Diuron; Herbicide combinations; Nicosulfuron; Paspalum notatum; Pastures; Sorghum halepense; Weed control
Abstract/Contents:"Summer grassy weeds are a major issue in bermudagrass hay pastures. In Oklahoma and Texas, bahiagrass (Paspalum notatum), johnsongrass (Sorghum halepense), and field sandbur (Cenchrus incertus) are among the most common and/or troublesome weeds. Nicosulfuron controls Paspalum sp., Cenchrus sp., Sorghum sp. and other grassy weeds, but has shown issues of crop response in bermudagrass. Yet further research is needed to determine the level of response. Therefore, experiments were established in May 2005, 2006, and 2007 to evaluate weed control efficacy, bermudagrass response, and yield results in bermudagrass using nicosulfuron, metsulfuron, and diuron combinations. Eight locations throughout Oklahoma and Texas were used to evaluate weed efficacy and one weed-free bermudagrass variety trial was used to evaluate bermudagrass response. Treatments included nicosulfuron+metsulfuron (0.623+0.1 or 0.938+0.15 oz/A) applied alone or with diuron (12.8 oz/A), imazapic+glyphosate (0.56+1.125 oz/A), and an untreated check. Sandbur was controlled 85 to 95% at four weeks after treatment with all treatments, but by ten weeks after treatment control ranged from 55 to 80%. At four and ten weeks after treatment a trend of improved sandbur control was apparent when diuron was tank-mixed with nicosulfuron and metsulfuron. At four weeks after application all treatments controlled bahiagrass at least 90%, but by ten weeks after application only the combinations of nicosulfuron+metsulfuron with or without diuron maintained control above 80%. The addition of diuron to nicosulfuron+metsulfuron reduced herbicidal efficacy of johnsongrass 15 to 25% regardless of rate or evaluation date. In the weed-free yield trials, the nicosulfuron+metsulfuron+diuron combination caused more chlorosis one week after treatment, but less bermudagrass stunting by three weeks after treatment than all other treatments. Bermudagrass treated with nicosulfuron+metsulfuron+diuron yielded more biomass than nicosulfuron+metsulfuron or imazapic+glyphosate. Cultivars exhibited differences in sensitivity to all treatments applied."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brewe, A. N., C. R. Medlin, R. N. Rupp, and E. P. Castner. 2008. Efficacy and bermudagrass response to nicosulfuron and diuron. South. Weed Sci. Soc. Proc. 61:p. 160.
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http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=210
    Last checked: 07/24/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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