Full TGIF Record # 225840
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Author(s):Hamilton, G. W. Jr.; Watschke, T. L.; Clark, J. M.
Author Affiliation:Hamilton: Supervisor; Clark: Research Technologist, Agronomy; Watschke: Professor, Turfgrass Science
Title:1991 crabgrass control with postemergence herbicides
Section:1991 results: Weed control in turfgrass
Other records with the "1991 results: Weed control in turfgrass" Section
Source:Turfgrass Research Results 1990/1991 [Penn State]. 1991, p. 91-92.
# of Pages:2
Publishing Information:[University Park, Pennsylvania]: [Pennsylvania State University, College of Agriculture, Agronomy Dept., Entomology Dept., Horticulture Dept., Plant Pathology Dept.]
Abstract/Contents:"An experiment was conducted to evaluate the control of smooth crabgrass (Digitaria ischaemum (Schreb.) Muhl) with selected postemergence herbicides and their combinations. The study was conducted on a blend of turf-type tall fescue at the Landscape Management Research Center of the Penn State University, University Park, PA. Treatments were arranged in a complete randomized block design with three replications. Treatments were applied with a 3', CO2 powered boom sprayer, delivering 40 gal/A with two T-jet 6504 nozzles, on July 12, 1991. The crabgrass was in the 3 to 5 tiller stage at the time of application. Crabgrass control was rated on a scale of 0 to 100%, with 80% being considered acceptable control. Plots were rated August 27, 1991. Quinclorac 0.75 lbs ai/A and fenoxaprop-ethyl at 0.18 lbs ai/A provided the best postemergence control of crabgrass. (There were duplicate treatments of quinclorac at 0.75 lbs ai/A in anticipation that follow-up applications may have to be made.) Quinclorac applied at 0.50 lbs ai/A was insufficient to provide control of a single application. Previous research has indicated the need for two sequential applications at 0.50 lbs ai/A to provide equivalent to one application at 0.75 lbs ai/A."
Note:This item is an abstract and table only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hamilton, G. W. Jr., T. L. Watschke, and J. M. Clark. 1991. 1991 crabgrass control with postemergence herbicides. Turfgrass Research Results 1990/1991 [Penn State]. p. 91-92.
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