Full TGIF Record # 149632
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Web URL(s):https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/14875g.pdf
    Last checked: 02/06/2017
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Publication Type:
i
Report
Author(s):Kopec, D. M.; Gilbert, J.; Pessarakli, M.; Nolan, S.
Author Affiliation:Kopec: Extension Specialist; Gilbert: Research Specialist Senior, Turfgrass; Pessarakli: Research Associate Professor, Turfgrass Science; Nolan: Student Research Assistant, Turf, College of Agriculture and Life Sciences, University of Arizona
Title:Use of velocity for post emergence control of (AB) in overseeded turf
Section:Turf management - Poa annua control
Other records with the "Turf management - Poa annua control" Section
Source:2009 Turfgrass, Landscape and Urban IPM Research Summary [Arizona]. February 2009, p. 215-232.
# of Pages:18
Publishing Information:Tucson, AZ: University of Arizona College of Agriculture & Life Sciences
Keywords:TIC Keywords: Bispyribac-sodium; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Metconazole; Overseeding; Poa annua control; Postemergence weed control; Seedhead inhibition; Trinexapac-ethyl
Trade Names:Velocity; Tourney; Primo
Abstract/Contents:"Velocity herbicide was applied alone, or with mixtures of Tourney fungicide and/or Primo PGR for the post emergence control/suppression of Poa annua (var. annua) in bermudagrass overseeded with perennial ryegrass. When applied alone as a repeat applications, Velocity herbicide applied at 15 and 30 gm ai/a was safe on perennial ryegrass overseed (based on color response). Velocity was safe for the overseed ryegrass when tank mixed with Tourney fungicide, both with and without the addition of Primo PGR. Tourney fungicide when applied alone at either 8 or 16 oz./product/acre produced no negative affects. As expected, Primo alone produced a dark color turf (7.8, 7.5, 7.0, and 7.0) on all four dates, respectively. Several treatments caused moderate injury to the (AB) across the entire test period. These included Velocity alone at the 15 gm/ai/a rate, and Velocity @ 30 gm ai/a plus Tourney @ 8 oz.prod/acre. The greatest amount of injury to (AB) occurred on 3/11/2008 for Velocity at 30 gm ai/a, either with or without Tourney fungicide. Although visible injury to Poa annua resulted after treatments were applied, seed head suppression was the most consistent treatment response. While injury to the Poa was severe for some treatments (Velocity plus Tourney fungicide), the Poa annua did return, ranging from re-growth as "weak plants" to an actively growing turfs (as is sometimes typical after a surviving injury response). Based on results, perhaps a tank mix application of Velocity at 30 gm ai/a along with 8 oz. product/acre of Tourney and 6 oz./acre of Primo, followed by a repeat application 35 days later may provide the ultimate seed head suppression."
Language:English
References:0
Note:"Published February 2009"
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kopec, D. M., M. Pessarakli, S. Nolan, and J. Gilbert. 2009. Use of velocity for post emergence control of (AB) in overseeded turf. Turfgrass Landscape Urban IPM Res. Summ. p. 215-232.
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https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/14875g.pdf
    Last checked: 02/06/2017
    Requires: PDF Reader
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