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| Publication Type:
| Report |
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| Author(s): | Hamilton, G. W. Jr.;
Watschke, T. L.;
Clark, J. M. |
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| Author Affiliation: | Hamilton: Supervisor; Clark: Research Technologist, Agronomy; Watschke: Professor, Turfgrass Science |
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| Title: | 1991 crabgrass control with postemergence herbicides |
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| Section: | 1991 results: Weed control in turfgrass
Other records with the "1991 results: Weed control in turfgrass" Section
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| Source: | Turfgrass Research Results 1990/1991 [Penn State]. 1991, p. 91-92. |
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| Publishing Information: | [University Park, Pennsylvania]: [Pennsylvania State University, College of Agriculture, Agronomy Dept., Entomology Dept., Horticulture Dept., Plant Pathology Dept.] |
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| # of Pages: | 2 |
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| 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." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract and table only! |
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| 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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