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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1993_vol47.pdf#page=101
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Spak, D. R.;
Taylorson, R. B. |
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| Author Affiliation: | Spak: Nor-Am Chemical Co., Lancaster, PA; and Taylorson: Adjunct Professor, Department of Plant Sciences, University of Rhode Island, Kingston RI |
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| Title: | Control of annual bluegrass in creeping bentgrass turf with mulitiple applications of ethofumesate |
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| Section: | Turfgrass and plant growth regulators - Wednesday January 6
Other records with the "Turfgrass and plant growth regulators - Wednesday January 6" Section
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| Meeting Info.: | Baltimore, MD: January 4-7, 1993 |
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| Source: | Proceedings of the 47th Annual Meeting of the Northeastern Weed Science Society. Vol. 47, 1993, p. 101-102. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Poa annua control; Agrostis stolonifera; Ethofumesate; Herbicide evaluation; Poa annua; Weed control; Application rates; Color; Density; Herbicide injury; Oxadiazon; Application timing
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| Cultivar Names: | Penncross |
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| Abstract/Contents: | "A study was initiated in the fall of 1991 to evaluate the control of annual bluegrass (Poa annua L.) using multiple applications of ethofumesate (Prograss SC) in 'Penncross' creeping bentgrass (Agrostis palustris Huds.) turf. The study was conducted at a sod farm located in Kingston, RI. Creeping bentgrass was maintained at 0.25 inch and was established from seed three months prior to the first treatment application. The initial annual bluegrass population, averaged over the site, was 22%. Three applications were made at 21 day intervals, beginning September 18, with a CO²-pressurized sprayer calibrated to deliver 44 gal/A. Rates evaluated were 0.5, 0.75, and 1.0 lb ethofumesate/A. The timing of the third application at 0.5 and 0.75 lb/A was compared; fall vs. spring (at green-up) application. Visual evaluations were made approximately 14 days after each application and included annual bluegrass control and turf injury (turf color and density). All treatments provided some level of annual bluegrass control (Table). Higher rates of ethofumesate were most efficacious, but turf injury was also greater. Delaying the third ethofumesate application of 0.5 or 0.75 lb/A until April did not change annual bluegrass control or turf injury. Substitution of oxadiazon (Ronstar 2G) for the spring application of ethofumesate appeared to be less effective, suggesting the importance of postemergence control of overwintering annual bluegrass plants. Turf density reductions induced by ethofumesate were caused by reducing the annual bluegrass population and by injuring the creeping betngrass. Based on the initial annual bluegrass population in each plot, density reductions were primarily a result of annual bluegrass control; the exception was ethofumesate at 1.0 lb/A where half of the density decline was attributed to bentgrass injury." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Spak, D. R., and R. B. Taylorson. 1993. Control of annual bluegrass in creeping bentgrass turf with mulitiple applications of ethofumesate. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 47:p. 101-102. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1993_vol47.pdf#page=101
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 53 |
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