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| Web URL(s): | http://www.newss.org/proceedings/proceedings-2015.pdf#page=38
Last checked: 10/23/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary Only |
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| Author(s): | Rana, S. S.;
Askew, S. D.;
Koo, S. |
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| Author Affiliation: | Askew: Vice President, NEWSS Executive Committee and Chair, NEWSS 2015 Program Committee and Collegiate Weed Contest Committee; Virginia Polytechnic Institute and State University, Blacksburg |
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| Title: | Kentucky bluegrass cultivar response to methiozolin |
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| Meeting Info.: | Williamsburg, Virginia: January 5-8, 2015 |
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| Source: | Proceedings of the Sixty-ninth Annual Meeting of the Northeastern Weed Science Society. Vol. 69, 2015, p. 36. |
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| Publishing Information: | College Park, Maryland: The University of Maryland |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Control methods; Cultivar evaluation; Golf fairways; Golf greens; Methiozolin; Poa annua control; Poa pratensis
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| Abstract/Contents: | "Methiozolin is a new isoxazoline herbicide under development by Moghu Research Center for use in turfgrass in the US and other countries. Methiozolin is typically used for selective POST annual bluegrass (Poa annua) control on creeping bentgrass (Agrostis stolonifera) putting greens. However, previous research at Virginia Tech and Moghu Research Center suggests that methiozolin at higher rates (1000 g ai/ha applied twice at monthly intervals) can also be used for annual bluegrass control on fairways. Controlling annual bluegrass on Kentucky bluegrass (Poa pratensis) fairways has always been challenging due to physiological similarities in the genus Poa. Moreover, Kentucky bluegrass is known for variation in herbicide response between cultivars. Since most previous work has been focused on the use of methiozolin on putting greens or green surrounds, more research is needed to elucidate methiozolin use on fairways. Therefore, field trials were conducted from fall 2011 through spring 2012 and from fall 2013 through spring 2014 at the Virginia Tech Turfgrass Research Center (TRC) in Blacksburg, VA, to determine response of 110 Kentucky bluegrass cultivars to methiozolin. Permission was granted to use a five-year-old Kentucky bluegrass National Turf Evaluation Program trial site for this study. The site was maintained at a 1.5-cm mowing height and fertility, pest control, and other inputs were added as needed to simulate golf fairway maintenance. Each 1.5 m by 1.5 m Kentucky bluegrass cultivar plot was subdivided into 4 subplots, which were treated twice at a one-month interval with methiozolin at 0 (NTC), 2000 (2X), 4000 (4X), and 6000 (6X) g ai/ha, respectively. The site lay dormant for one year between trial repetition and subplots were rotated 90 degrees and re-randomized for the second trial. Kentucky bluegrass, annual bluegrass, and broadleaf weed cover/control ratings were assessed 3 times each in fall and spring following methiozolin applications. Response of Kentucky bluegrass cultivars and weeds to methiozolin was similar in both years; therefore, data were pooled across years. At 6 weeks after initial treatment (WAIT), methiozolin at the 2 and 4X rates was safe to all 110 Kentucky bluegrass cultivars. The 6X rate of methiozolin injured approximately 15% of the 110 Kentucky bluegrass cultivars more than commercially acceptable levels (30%) and injury was expressed as stunting with little or no discoloration to turf. At 21 WAIT, methiozolin at all rates tested produced Kentucky bluegrass cover equivalent or better than the non-treated check. All rates of methiozolin reduced annual bluegrass, corn speedwell (Veronica arvensis), Persian speedwell (Veronica persica), common chickweed (Stellaria media), and mouse-ear chickweed (Cerastium vulgatum) cover 21 WAIT. Results from this study indicate that methiozolin controls annual bluegrass and several other broadleaf weeds with commercially-acceptable Kentucky bluegrass response on all cultivars at 2 times and most cultivars at 4 and 6 times the rate needed for annual bluegrass control." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rana, S. S., S. D. Askew, and S. Koo. 2015. Kentucky bluegrass cultivar response to methiozolin. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 69:p. 36. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings-2015.pdf#page=38
Last checked: 10/23/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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