Full TGIF Record # 63391
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Belcher, J. L.; Walker, R. H.; Wehtje, G. R.
Author Affiliation:Alabama Agricultural Experiment Station, Auburn
Title:Postemergence control of non-tuberous sedges in turf
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Meeting Info.:52nd Annual Meeting, Greensboro, NC, January 25-27, 1999
Source:Southern Weed Science Society Proceedings. Vol. 52, 1999, p. 250.
# of Pages:1
Publishing Information:Champaign, IL: Southern Weed Science Society.
Keywords:TIC Keywords: Cyperaceae; Cyperus esculentus; Cyperus rotundus; Kyllinga brevifolia; Cyperus globulosus; Kyllinga odorata; Weed control; Postemergence herbicides; Herbicide evaluation; Bentazon; Application rates; MSMA; Imazaquin; Halosulfuron; Sulfentrazone; 2,4-D + Mecoprop + Dicamba; Surfactants
Abstract/Contents:"Sedge control in turf has previously focused primarily on yellow (Cyperus esculentus) and purple nutsedge (C. rotundus). Recently, however, several non-tuberous sedge species have been identified as potential problems. These non-tuberouse species include green kyllinga (C. brevifolius) and globe sedge (C. globulosus), which are perennials, and annual species such as annual kyllinga (C. sesquiflorus) and annual flat sedge (C. compressus). Relatively few studies have been published evaluating control of these non-tuberous sedge species. This study was conducted in the Fall of 1998 to evaluate the efficacy of POST-applied herbicides for control of the above species. Plants were collected from several turf areas, identified by the seedhead, and transplanted into 32 - ounce cups containing a sandy loam soil. All plants were clipped to a 3-inch height 50 days after transplanting (3 days prior to treatment). Herbicides and rates (lb ai/A) were: bentazon (1.0), MSMA (2.0), imazaquin (0.38), halosulfuron (0.064), Trimec Plus (2.4) (consisting of MSMA/2,4-D/MCPP/dicamba), Trimec Classic (consisting of 2, 4-D/MCPP/dicamba) + sulfentrazone (1.64 + 0.02), sulfentrazone (0.38), imazaquin + MSMA (0.38 + 2.0), and halosulfuron + MSMA (0.064 + 2.0). Herbicides were applied in 30 GPA and a non-ionic surfactant was included at 0.25% v/v. Each treatment was applied either singly or sequentially with the sequential being applied 2 weeks after the initial (WAI). Percent control was visually evaluated at 3 and a5 WAI. Plants were harvested after final rating and dry weights recorded. No single application was effective in controlling green kyllinga, however 98% control was obtained with two applications of MSMA. MSMA with either 2,4-D/MCPP/dicamba, imazaquin, or halosulfuron provided 89 to 93% control with two applications. Excellent control (>96%) was obtained for globe sedge with all treatments that contained MSMA after a single application. Only the halosulfuron and the 2,4-D/MCPP/dicamba + sulfentrazone treatments failed to provide >80% control after two applications. Annual kyllinga and annual flat sedge were controlled >84% for all treatments with a single application. Dry weights generally supported visual estimates of percent control."
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Belcher, J. L., R. H. Walker, and G. R. Wehtje. 1999. Postemergence control of non-tuberous sedges in turf. South. Weed Sci. Soc. Proc. 52:p. 250.
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