Full TGIF Record # 158307
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Web URL(s):http://www.wsweedscience.org//wp-content/uploads/proceedings-archive/2009.pdf#page=83
    Last checked: 12/10/2013
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Content Type:Abstract or Summary only
Author(s):Curtis, Daniel W.; Hinds-Cook, Barbara J.; Brewster, Bill D.; Hulting, Andrew G.; Mallory-Smith, Carol A.
Author Affiliation:Oregon State University, Corvallis, OR
Title:Tolerance of perennial ryegrass and tall fescue grown for seed to aminocyclopyrachlor (DPX KJM-44)
Section:Weeds of agronomic crops
Other records with the "Weeds of agronomic crops" Section
Meeting Info.:Albuquerque, NM: March 10-12, 2009
Source:Proceedings of the Western Society of Weed Science. Vol. 62, 2009, p. 70-71.
# of Pages:2
Publishing Information:Newark, CA: Western Society of Weed Science
Keywords:TIC Keywords: Aminocyclopyrachlor; Festuca arundinacea; Herbicide evaluation; Herbicide resistance; Lolium perenne; Seed yield
Abstract/Contents:"A study initiated in the fall of 2005 near Corvallis, OR, indicated that DPX KJM-44 (Aminocyclopyrachlor) provided 95% wild carrot control through the growing season when applied at 0.268 lb ai/A the previous September in established perennial ryegrass grown for seed. No visible injury to the perennial ryegrass was observed and the seed yield was not reduced by the aminocyclopyrachlor treatment in the preliminary study. In two non-crop studies initiated March 6, 2007, and May 15, 2007, aminocyclopyrachlor applied at 0.125 lb ai/A to two to six inch diameter rosettes (March) and two to eight inch diameter rosettes (May), provided 100 to 80% control of wild carrot, respectively. Based on these efficacy studies utilizing aminocyclopyrachlor, crop tolerance studies were initiated in established perennial ryegrass and in established tall fescue. The perennial ryegrass stand was in the second year of seed production and the tall fescue stand was in the first year of seed production having been planted the previous spring. Aminocyclopyrachlor was applied at 0.0625, 0.125, 0.25, and 0.5 lb ai/A on March 23, 2007, to the perennial ryegrass. Aminocyclopyrachlor was applied at 0.125, 0.25, and 0.5 lb ai/A to the tall fescue on March 6, 2008, and at the second timing to different plots on April 16, 2008. aminocyclopyrachlor applied at .5 lb ai/A reduced perennial ryegrass seed yield from 1529 lb/A in the untreated check to 1187 lb/A. Tall fescue seed yields were reduced by aminocyclopyrachlor applied at 0.5 lb ai/A in March from 1252 to 874 lb/A and from 1252 to 931 lb/A. Perennial ryegrass seed germination was reduced 60% by the 0.5 lb ai/A treatment. Tall fescue seed germination was reduced 12% by the 0.5 lb ai/A April aminocyclopyrachlor treatment. Yields and seed germination were not redueced in either crop by 0.125 lb ai/A aminocyclopyrachlor treatement. These results indicate that aminocyclopyrachlor may be a useful tool for broadleaf weed management in grass grown for seed, particularly for difficult to control species such as wild carrot."
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Curtis, D. W., B. J. Hinds-Cook, B. D. Brewster, A. G. Hulting, and C. A. Mallory-Smith. 2009. Tolerance of perennial ryegrass and tall fescue grown for seed to aminocyclopyrachlor (DPX KJM-44). Proc. West. Soc. Weed Sci. 62:p. 70-71.
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    Last checked: 12/10/2013
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