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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2003%20Proceedings-SWSS.pdf#page=246
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Cargill, L. M.;
Montgomery, D. P.;
Martin, D. L. |
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| Author Affiliation: | Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK |
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| Title: | An update on sericea lespedeza (Lespedeza cuneata [Dumont] G. Don) control from roadside trials in Oklahoma |
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| Section: | Utility, railroad and highway right-of-way and industrial sites
Other records with the "Utility, railroad and highway right-of-way and industrial sites" Section
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| Meeting Info.: | Houston, Texas: January 27-29, 2003 |
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| Source: | Proceedings: Southern Weed Science Society: 56th Annual Meeting. Vol. 56, 2003, p. 160. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Cynodon dactylon; Herbicide evaluation; Lespedeza cuneata; Postemergence herbicides; Roadside turf; Weed control
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| Geographic Terms: | Oklahoma |
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| Abstract/Contents: | "Duplicate field experiments were conducted at four locations in north central Oklahoma during 2001 and 2002 to evaluate several postemergent herbicides for the selective control of sericea lespedeza and common bermudagrass tolerance along highway roadsides. Nine herbicide treatments were applied to sericea lespedeza plants ranging in height from 12 to 24 inches on 24 May 2001, 1 June 2001 and 31 May 2002 to plots 5 by 15 feet. Three Escort treatments were fall-applied to sericea lespedeza plants 6 to 24 inches tall on 12 September 2001 and 25 September 2002 (no data available). The Escort treated plots had been previously mowed at an approximate height of six inches with a sicklebar mower on 24 July and 3 August (2001 studies) and 23 July (2002 studies). Applications were made with a CO2 pressurized R&D brand boom-type bicycle sprayer equipped with three TeeJet 8002 VS XR flat-fan spray tips and calibrated to deliver 20 gallons per acre at a pressure of 24 PSI. Herbicide treatments evaluated and expressed in product rates per acre, included Garlon 4 at 8.0, 16.0 and 24.0 fluid ounces; Vista at 8.0, 16.0 and 21.0 fluid ounces; Escort at 0.3, 0.5 and 1.0 ounces and Distinct at 4.0, 8.0 and l2.0 ounces. All herbicide treatments had a non-ionic surfactant and ammonium sulfate (AMS) added at a rate of 0.25% v/v and 3.4 lbs. product, respectively. Treatments were arranged in a randomized complete block design with three replications. Percent sericea lespedeza control and percent bermudagrass phytotoxicity were visually evaluated 1, 2, 3 and 12 months-after-treatment (MAT). The sericea lespedeza control ratings ranged from 0 percent or no control to 100 percent or complete eradication. Percent bermudagrass phytotoxicity ratings were scaled from 0 to 100, where 0 equals no injury and 100 equals complete brownout or complete necrosis of the bermudagrass. Only data from the two duplicate experiments conducted during 2001 will be reported, since data collection from the two duplicate experiments initiated during 2002 is incomplete. Final evaluations of the 2002 studies will be conducted in spring 2003. Common bermudagrass was present at only 1 of 2 sites and data will be reported from this one study. Data for percent sericea lespedeza control is pooled and will be presented for the 12 MAT evaluations. Throughout the 2001 and 2002 growing seasons, no bermudagrass phytotoxicity (0% injury) was produced from any of the herbicide treatments tested in these experiments. Excellent sericea lespedeza control was produced by the two higher rates of Garlon 4 at 16.0 fl.oz./A (91%) and 24.0 fl.oz./A (98%); the two higher rates of Vista at 16.0 fl.oz./A (96%) and 21.0 fl.oz./A (99%); and the three treatments of Escort at 0.3 oz./A (91%), 0.5 oz./A (95%) and 1.0 oz./A (96%). These treatments provided significantly better control than the remaining treatments. Only moderate sericea lespedeza control (58% to 78%) was achieved with the lowest rates of both Garlon 4 and Vista (8.0 fl.oz./A) and the two higher rates of Distinct (8.0 and 12 oz./A). Poor control of sericea lespedeza (47%) was provided by the lowest rate of Distinct (4.0 oz. /A)." |
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| Language: | English |
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| References: | 0 |
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| Note: | "Invasive weeds: Real or imagined threat?"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cargill, L. M., D. P. Montgomery, and D. L. Martin. 2003. An update on sericea lespedeza (Lespedeza cuneata [Dumont] G. Don) control from roadside trials in Oklahoma. South. Weed Sci. Soc. Proc. 56:p. 160. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2003%20Proceedings-SWSS.pdf#page=246
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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