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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=118
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Spackman, Chad W.;
Johnson, Jon M.;
Kuhns, Larry J. |
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| Author Affiliation: | Research Technologist, Project Assistant, and Professor of Ornamental Horticulture, The Pennsylvania State University |
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| Title: | Evaluation of herbicides for control of Cananda thistle in fine fescue |
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| Meeting Info.: | Newport, RI; January 6-9, 1997 |
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| Source: | Proceedings of the 51st Annual Meeting of the Northeastern Weed Science Society. Vol. 51, 1997, p. 118-119. |
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| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Cirsium arvense; Fine fescues; Herbicide efficacy; Herbicide evaluation; Herbicide trials; Weed control
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| Abstract/Contents: | "As part of a cooperative project between the Pennsylvania State University and the Pennsylvania Department of Transportation, a trial was established to evaluate several herbicides for selective control of Canada thistle (Cirsium arvense L.) within a stand of fine fescue. The study area was located within an established stand of fine fescue, comprised predominantly of hard fescue (Festuca longifolia Thuill.), at Penn State's Landscape Management Research Center and arranged in a randomized complete block design with three replications. Treatments included and untreated check, 0.75 lbs/ac diglycolamine salt of dicamba (dicamba), 0.35 lbs/ac SAN 1269H alone and in combination with 0.5 lbs/ac clopyralid or 0.012 lbs/ac metsulfuron methyl, 2 lbs/ac glyphosate, 1 lb/ac triclopyr, and 0.188 lbs/ac imazameth. All treatments, except gylphosate, contained 0.125% (v/v) durfactantâ‚‚/] and all contained 0.25% (v/v) drift control agentâ‚‚]. Application was made to 6 by 10 ft plots on June 12, 1996, using a COâ‚‚-powered hand held sprayer equipped with Spraying Systems XR 8004 VS spray tips, delivering 40 GPA at 35 psi. Ground cover ratings of the fine fescue were taken June 12, July 24, 43 days agter treatment (DAT); and August 30, 79 DAT. An initial count of thisle stems within the plots was taken June 12. A count of uncontrolled thistle stems and thistle resprouts was taken July 24 and August 30. These values were utilized for determining percent thistle resprouts and percent thistle decline, which evaluates the extent of decline of the originally treated stems and was affected by either treatment or natural senescence. Percent decline and resprouting results are reported in Table 1. All treatments, except triclopyr or imazameth, provided similar levels of thistle decline at the July 24 rating. Triclopyr was slightly lower, while imazameth was not different from the untreated check. Due to natural senescence of thistle plants, and increase in thistle decline was evedent at the August rating, as the untreated check escalated from 15 percent decline in July to 64 percent in August. All other treatments, excluding the check and imazameth, provided similar levels of decline at the August rating. Percent thistle resprouting values at the July rating were similar for all treatments, except triclopyr with the highest level at 37 percent. There was no significant difference among treatments at the August rating except for imazameth, which actually resprouted by 151 percent. None of the treatments thinned the fine fescue stand but imazameth provided slight necrosis to the leaf tips. All treatments, except imazameth, provided selective control of treated thistles; but all still had significant resprouting occur. No treatment provided an overall acceptable level of control, therefore repeat applications would be necessary to eliminate the thistle." |
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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):
Spackman, C. W., J. M. Johnson, and L. J. Kuhns. 1997. Evaluation of herbicides for control of Cananda thistle in fine fescue. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 51:p. 118-119. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=118
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 51 |
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