Full TGIF Record # 81548
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Web URL(s):http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=109
    Last checked: 07/24/2013
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Publication Type:
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Report
Content Type:Abstract or Summary only
Author(s):Hart, S. E.; Lycan, D. W.; Meyer, W. A.; Rose-Fricker, C.
Author Affiliation:Hart, Lycan, Meyer: Rutgers University, New Brunswick, NJ; and Rose-Fricker: Pure Seed Testing, Hubbard, OR
Title:Increased glyphosate tolerance in tall and fine fescue
Meeting Info.:Loews Hotel, Philadelphia, PA: January 7, 8, 9, and 10, 2002
Source:Proceedings of the 56th Annual Meeting of the NortheasternWeed Science Society. Vol. 56, 2002, p. 109.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Glyphosate; Herbicide Resistance; Fine fescues; Festuca arundinacea; Festuca ovina subsp. duriuscula; Application timing
Cultivar Names:Pure Gold; Coronado; Intrigue; Aurora Gold
Abstract/Contents:"Field experiments were conducted through 2000 and 2001 at the Rutgers Plant Science Research Center at Adelphia, NJ to evaluate the tolerance of tall fescue (Festuca arundinacea Screb. 'Pure Gold') and hard-fine fescue (Festuca longifolia Thuill. 'Aurora Gold'). These fescue varieties had been selected for increased glyphosate tolerance by recurrent selection. Tall fescue variety 'Coronado' and hard-fine fescue variety 'Intrigue' which had not undergone selection were also included in the study. All varieties were established on May 3, 2000. Single applications of glyphosate were applied on September 22, 2000, May 30, 2001, or July 22, 2001. Application rates were 0.05, 0.09, 0.188, 0.38, 0.56, 0.75 and 1.5 lbs ae/a. All herbicide applications were applied with a CO2 backpack sprayer delivering 40 gallons per acre. Fall applied treatments were evaluated for turf injury 4 weeks after treatment (WAT) and the following April and May. Spring and summer applications were evaluated at 4,8, and 12 WAT. Averaged across varietes, fall applications tended to provide the highest levels of turf injury while the least amount of injury was observed with summer applications. Although chlorosis of tall fescue varieties was evident at lower rates, stand thinning and vigor reduction was not observed until glyphosate rates reached 0.188 lbs/a in the fall, 0.56 lbs/a in the spring and 0.75 lbs/a in the summer. No differential response was observed between 'Pure Gold' and 'Coronado' varieties. In contrast, 'Aurora Gold' hard fescue showed a greater degree of tolerance to glyphosate at all application times compared to 'Intrigue.' Stand thinning of 'Aurora Gold' was not evident until glyphosate rates had reached 0.75 lbs/a in the fall and spring and 1.5 lbs/a in the summer. The results of these studies suggest that the tolerance of hard fescue was successfully increased by conventional breeding methods. It appears that the tolerance of 'Aurora Gold' may be sufficient to allow the potential for direct use of glyphosate for weed control."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hart, S. E., D. W. Lycan, W. A. Meyer, and C. Rose-Fricker. 2002. Increased glyphosate tolerance in tall and fine fescue. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 109.
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Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=109
    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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