Full TGIF Record # 107153
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Web URL(s):https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az13593a7.pdf
    Last checked: 02/06/2017
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Publication Type:
i
Report
Author(s):Kopec, D. M.; Gilbert, J.; Bates, Michael
Author Affiliation:Kopec: Department of Plant Sciences; Gilbert: Senior Research Specialist, University of Arizona, Tucson, Arizona; Bates: Superintendent, Country Club of Green Valley
Title:Application of proxy PGR for Poa seed head suppression, 2000
Section:Herbicides and weed control
Other records with the "Herbicides and weed control" Section
Source:2004 Turfgrass, Landscape and Urban IPM Research Summary [Arizona]. 2004, p. [1-8].
# of Pages:8
Publishing Information:Tucson, AZ: University of Arizona College of Agriculture & Life Sciences
Keywords:TIC Keywords: Growth regulators; Poa annua; Seedhead inhibition; Ethephon; Poa annua control; Application rates; Weed control; Application timing
Trade Names:Proxy
Abstract/Contents:"Proxy (ethephon) was applied to 100% pure stands of Poa annua as either a single or repeat application 24 days apart at both a five and ten-ounce product rate per 1000 square feet. Percent plot seed heads were decreased significantly on three of five evaluation dates before either the loss of treatment effect and/or environmental conditions triggered profuse flowering (by 20 April, 2000). The five-ounce rate produced moderate seed head supression at 16 and 25 days after the first treatments by which afterward, control was minimal. By April, the five-ounce repeat applications were no better in suppression of sead heads than either of the single applications, regardless of application timing (March 3 or 29). The ten-ounce rates generally produced 40% - 80% greater seed heads supression than the five-ounce rate treatments. Maximum seed head control was achieved by the repeat applications (March 3 and 29) of the ten-ounce rate, which consistently produced between 8% and 19%, seed head cover up until the first ten days of April 2000. Proxy, when applied at the five-ounce/M rate had the greatest effect in seed head suppression early in the test (10 March). Perhaps earlier season applications at the five-ounce rate may be necessary to manifest greater suppression initially, and perhaps in a cumulative fashion for season long control."
Language:English
References:0
Note:Tables
Graphs
See Also:Other items relating to: P G Rs 1997-2006
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kopec, D. M., J. Gilbert, and M. Bates. 2004. Application of proxy PGR for Poa seed head suppression, 2000. Turfgrass Landscape Urban IPM Res. Summ. p. [1-8].
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https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az13593a7.pdf
    Last checked: 02/06/2017
    Requires: PDF Reader
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