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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1993_vol47.pdf#page=106
Last checked: 07/24/2013
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| Publication Type:
| Report |
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| Author(s): | Gover, Arthur E.;
Batey, David A.;
Watschke, Thomas L. |
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| Author Affiliation: | Gover: Project Associate; Batey: Research Aide; and Watschke: Professor of Turfgrass Science, The Pennsylvania State University, University Park, PA |
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| Title: | Comparison of mefluidide and sethoxydim as plant growth regulators in tall fescue |
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| Section: | Turfgrass and plant growth regulators - Wednesday January 6
Other records with the "Turfgrass and plant growth regulators - Wednesday January 6" Section
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| Meeting Info.: | Baltimore, MD: January 4-7, 1993 |
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| Source: | Proceedings of the 47th Annual Meeting of the Northeastern Weed Science Society. Vol. 47, 1993, p. 106-107. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Mefluidide; Sethoxydim; Growth regulators; Comparisons; Festuca arundinacea; Tank mix; Application rates; Imazethapyr; Imazapyr; Color; Height; Growth; Clipping weight; Dry weight
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| Cultivar Names: | Cimmaron; Bonanza; Olympia |
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| Abstract/Contents: | "A study evaluating sethoxydim as an alternative to mefluidide for use as a plant growth regulator was initiated May 11, 1992 at The Penn State Landscape Management Research Center in University Park, PA, as part of a cooperative project with the Pennsylvania Department of Transportation. The study was established on a six year old stand of 'Bonanza', 'Cimmaron', and 'Olympia' tall fescues (Festuca arundinacea Schreb.). The study included nine treatments arranged in a randomized complete block design, with three replications. The treatments were applied to 3 by 15 ft plots with a CO₂ pressurized backpack sprayer delivering 15.8 gal/ac at 24 psi using Spraying Systems 8002 flat fan spray tips. The treatments were chlorsulfuron at 0.012 lb ai/ac plus either mefluidide at 0.188 lb ai/ac, or sethoxydim at 0.063, 0.093, or 0.125 lb ai/ac; a commercial premix of imazethapyr and imazapyr at 0.046 lb ai/ac (0.044 plus 0.0016 lb ai/ac, respectively) plus either mefluidide at 0.125 lb ai/ac, or sethoxydim at 0.063, 0.093, or 0.125 lb ai/ac; and an untreated check. A non-ionic spray adjuvant was included in all plant growth regulator treatments at 0.25% v/v. On June 2, 22 days after treatment (DAT), visual ratings of turf color were taken on a 1 to 9 scale where '1'=dead turf, '9'=darkest green, and '5' being the lowest acceptable rating for low maintenance turf; and vegetative canopy height measurements were taken at two locations in each plot. On June 17, 37 DAT, fresh clipping weights were taken with a 20 in rotary mower with a cutting height of 3 in. A subsample was taken from each plot, and weighed fresh and dry to determine dry matter content and dry weight clipping yields. Fresh plot weights were taken on July 24, 1992, 74 DAT, to determine recovery. Results are reported in Table 1. The color rating for untreated check was significantly better than all treated plots while the combination of mefluidide plus chlorsulfuron and mefluidide plus imazethapyr plus imazapyr were significantly better than all treatments which included sethoxydim. All turf color ratings for sethoxydim treated plots were unacceptable. Vegetative canopy height, and fresh and dry weight clipping yields taken 37 DAT were similar among all treated plots, while the untreated checks were significantly greater. No differences in dry matter content were found among any of the treatments. Plot regrowth 74 DAT in the untreated check was significantly lower than for the treated plots. All treatments provided excellent seedhead control. Sethoxydim provided growth inhibition similar to mefluidide treatments, but under the conditions and rates used in this study, sethoxydim would not be an acceptable component of a plant growth regulator treatment due to unacceptable discoloration of tall fescue. Lower rates of sethoxydim may reduce the discoloration resulting from the treatment and still provide acceptable results, as the lowest rates used in this study provided excellent inhibition of seedheads and foliage growth." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gover, A. E., D. A. Batey, and T. L. Watschke. 1993. Comparison of mefluidide and sethoxydim as plant growth regulators in tall fescue. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 47:p. 106-107. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1993_vol47.pdf#page=106
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 53 |
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