Full TGIF Record # 245418
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Web URL(s):http://www.newss.org/proceedings/proceedings_1990_vol44.pdf#page=117
    Last checked: 07/25/2013
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    Notes: Item is within a single large file; Proceedings of the 44th Annual Meeting of the Northeastern reprint
Publication Type:
i
Report
Author(s):Gover, Arthur E.; Watschke, Thomas L.; Lyman, Gregory T.
Author Affiliation:Gover: Sr. Research Technologist; Watschke: Professor of Turfgrass Science; Lyman: Project Assistant, Department of Agronomy
Title:Response of 'Kentucky 31' and turf-type tall fescue to plant growth regulator treatments
Section:Roadside vegetation management studies
Other records with the "Roadside vegetation management studies" Section
Source:Turfgrass Research Results 1989 [Penn State]. 1989, p. 53-54.
# of Pages:2
Publishing Information:[University Park, Pennsylvania]: [Pennsylvania State University, College of Agriculture, Agronomy Dept., Entomology Dept., Horticulture Dept., Plant Pathology Dept.]
Keywords:TIC Keywords: Festuca arundinacea; Growth analysis; Growth regulator evaluation; Roadside turf
Cultivar Names:Kentucky 31
Abstract/Contents:"As part of a cooperative project with the Pennsylvania of Transportation (PennDOT), a field study was initiated to determine whether there was a differential response to plant growth regulators (PGR) between 'Kentucky 31' and turf-type tall fescues (Festuca arundinacea Schreb.). PennDOT currently specifies 'Kentucky 31' for its primary seeding mixture, but other species and turf-type tall fescue are being evaluated as possible alternatives. Knowledge of different responses would be essential to determining the proper PGR treatment for roadside areas. The study was initiated May 9, 1989, but due to rainfall immediately after application, the treatments were reapplied to a new site on May 18, 1989. This second site had been mowed twice prior to application at a height of eight cm. The treatments applied were mefluidide at either 210 of 315 g ai/ha plus 560 g ai/ha dicamba, mefluidide plus metsulfuron methyl at 140 plus 5.2 g ai/ha, mefluidide plus chlorsulfuron at 140 plus 13.1 g ai/ha, mefluidide at either 70 or 140 g ai/ha plus a premix of imazethapyr and imazapyr at 49.2 and 1.9 g ai/ha, and an untreated check. These treatments were applied to a two year old stand of 'Kentucky 31' and a two year old stand of 'Transition Blend' turf-type tall fescue using a CO2 powered backpack sprayer delivering 309 1/ha at 207 kpa with Spraying Systems 6504 flat fan nozzles. Plots were 0.9 by 4.6 m and arranged in a randomized complete block with three replications. Visual ratings for percent seedhead suppression were taken on June 1 and July 3, two and five weeks after treatment (WAT) respectively. These ratings were taken by replication, relative to the untreated check. Turf color and quality ratings and a clippings harvest were also taken 5 WAT. Mefluidide at either 210 or 315 g ai/ha plus dicamba were the least effective treatments for both varieties. Seedhead suppression with both treatments was significantly greater than the check in 'Kentucky 31', while only the 315 g/ha rate was significantly different than the check in 'Transition Blend'. The 'Kentucky 31' untreated check was rate better for turf color than the mefluidide plus dicamba treatments, but was rated significantly lower in turf quality due to more seedheads. Both mefluidide plus dicamba treatments had significantly better color and quality than the untreated check in the 'Transition Blend' plots. Dry matter production per plot was not significantly different between rates or from the untreated check for either tall fescue stand. Mefluidide plus metsulfuron methyl provided excellent seedhead suppression on both tall fescue stands at both 2 and 5 WAT. Turf color was rated lower than the untreated check, but not significantly, in 'Kentucky 31' plots, while turf quality was significantly better due to effective seedhead suppression. In the 'Transition Blen' plots, turf color and quality were significantly better than the untreated check. The plots treated with mefluidide plus metsulfuron methyl produced the least amount of dry matter for both stands. The combinations of mefluidide plus chlorsulfuron, and mefluidide at 70 or 140 g ai/ha, plus the pre-mix of imazethapyr plus imazapyr provided excellent seedhead suppression, the highest ratings for turf color and quality, and significantly less dry matter than the untreated check for both tall fescue stands."
Language:English
References:0
Note:Reprint appears in Proceedings of the 44th Annual Meeting of the Northeastern, Vol. 44 1990, p. 117-118
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gover, A. E., T. L. Watschke, and G. T. Lyman. 1989. Response of 'Kentucky 31' and turf-type tall fescue to plant growth regulator treatments. Turfgrass Research Results 1989 [Penn State]. p. 53-54.
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Web URL(s):
http://www.newss.org/proceedings/proceedings_1990_vol44.pdf#page=117
    Last checked: 07/25/2013
    Requires: PDF Reader
    Notes: Item is within a single large file; Proceedings of the 44th Annual Meeting of the Northeastern reprint
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