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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=272
    Last checked: 07/25/2013
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Publication Type:
i
Report
Author(s):Ezell, A. W.
Author Affiliation:Mississippi State University, Starkville, MS
Title:Effects of different surfactants and application methods on woody species control in utility rights-of-way
Section:Vegetation management
Other records with the "Vegetation management" Section
Meeting Info.:Jacksonville, Florida: January 27-30, 2008
Source:2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 178.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Application methods; Combination treatments; Herbicide application; Herbicide efficacy; Herbicide evaluation; Roadside plants; Surfactants; Weed control; Woody plants
Abstract/Contents:"Control of woody species is a major concern for rights-of-way managers. While mowing can be effective on herbaceous or shrubby species, control of tree species usually requires the use of herbicides and surfactants. Any use of herbicides is accompanied with a consideration for the potential impact on non-target species. Use of herbicides is an important option for T.V.A. area managers, and they must be responsive to both control efficacy and environmental safety needs. The U.S. Fish and Wildlife Service raised questions regarding the use of surfactants on T.V.A. rights-of-way, and this study was designed to address those questions. Specifically, any surfactant used in herbicide applications for T.V.A. must have a LC50 greater/or equal to 20 mg/L for Daphnia or bluegill. Thus, the objectives of this study were (1) evaluate the efficacy of treatments using different surfactants all of which exceeded the safety limitations for bluegill, (2) evaluate different herbicide tank mixtures for control of a variety of tree species, and (3) evaluate control efficacy as influenced by application method. Herbicide mixtures used in the study were (A) Accord Concentrate (5 qts/A) + Arsenal (16 oz/A) and (B) Krenite S (6 qts/A) + Arsenal (16 oz/A). Surfactants used in the study were Activate Plus, LI 700, and Droplet Landing Zone (DLZ). All surfactants were used at a rate of 2 quarts/A. Application methods included (A) aerial simulation, (B) backpack crew, and (C) high volume truck spraying. A total of 18 treatment/surfactant/application method combinations were replicated three times on rectangular plots 30 ft. x 100 ft. in a randomized complete block design. All treatments were applied September 19-20, 2006. All woody stems in sample areas (10 ft. x 80 ft. centered in treatment plot) were recorded pre-application and again on October 3, 2007. Control was based on the percent reduction between the two evaluations. Results demonstrated that Activate Plus provided significantly better control than the other surfactants. The Krenite mixtures provided better overall control of woody species, primarily due to better control of the pine on the site. Earlier application is recommended if glyphosate is to be used and pines are prevalent. Aerial simulation and backpack applications both produced very good and comparable control. Control from the high volume truck application was significantly less. The estimate of total spray volume per acre given by the operational truck spray crew is considered to have been inaccurate resulting in the poor control from the application."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ezell, A. W. 2008. Effects of different surfactants and application methods on woody species control in utility rights-of-way. South. Weed Sci. Soc. Proc. 61:p. 178.
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http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=272
    Last checked: 07/25/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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