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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=115
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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| Content Type: | Abstract or Summary only |
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| Author(s): | King, S. R.;
Hipkins, P. L.;
Askew, S. D.;
Hagood, E. S.;
Beam, J. B. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Nimblewill control in cool-season turf |
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| Meeting Info.: | Loews Hotel, Philadelphia, PA: January 7, 8, 9, and 10, 2002 |
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| Source: | Proceedings of the 56th Annual Meeting of the NortheasternWeed Science Society. Vol. 56, 2002, p. 115. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Glechoma hederacea; Trifolium repens; Muhlenbergia schreberi; Postemergence herbicides; Weed control; Cool season turfgrasses
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| Abstract/Contents: | "Field experiments were conducted in 2000 and 2001 in Virginia to evaluate postemergence herbicides for selective control of nimblewill in cool-season turf. Nimblewill (Muhlenbergia schreberi) is a course-textured perennial grass that resprouts from stolons each spring. Commercial herbicides are not currently available to selectively control nimblewill in desirable turfgrass. Recent observations have indicated potential control through the use of two herbicides, mesotrione and isoxaflutole, currently labeled for use in field crops. A preliminary non-replicated experiment was conducted using a logarithmic sprayer to examine a large range of rates within a limited amount of space to determine suitable rates of these herbicides. A second experiment was arranged in a randomized complete block design and conducted at two sites in Montgomery County. Treatments included mesotrione and isoxaflutole applied at various rates with or without a sequential application, single and sequential applications of triclopyr at several rates, and a sequential application of fenoxaprop-p-ethyl. Logarithmic experiments indicated mesotrione rates of .025 lb ai/acre to .25 lb ai/acre could be included for future evaluation, while lower rates were ineffective for nimblewill control and higher rates caused significant phytotoxicity to bluegrass turf. Isoxaflutole rates ranges were also determined to be in between .025 lb ai/acre and .15 lb ai/acre for acceptable weed control and crop tolerance. Turfgrass mixtures of approximately 80% bluegrass, 15% fescue, and 5% perennial ryegrass were not injured by the herbicides and rates evaluated. Initial evaluations at 18 DAT indicated that single applications of isoxaflutole at 0.15 lb ai/acre provided excellent control of nimblewill, as well as near complete control of ground ivy (Glechoma hederacea) and white clover (Trifolium repens). No significant difference was observed between isoxaflutole at .15 lb ai/acre and mesotrione at .25 lb ai/acre at 18 DAT for nimblewill, ground ivy or white clover control. However, at 9 WAT, a single application of isofluxatole at 0.15 lb ai/acre provided commercially acceptable control of all three species, while mesotrione applied at 0.25 lb ai/acre resulted in less than 50% control of nimblewill and significantly lower control of ground ivy and white clover. Single applications of triclopyr provided excellent broadleaf control and minimal control of nimblewill. Four sequential applications of 1 lb ai/acre of triclopyr resulted in less that 50% control of nimblewill at 9WAT. Fenoxaprop-p-ethyl treatments provided less than 15% control of nimblewill throughout the duration of the experiment. Future experiments need to evaluate the use of mesotrione and isoxaflutole in combination with other products and the potential of non-target movement of isoxaflutole." |
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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):
King, S. R., P. L. Hipkins, S. D. Askew, E. S. Hagood, and J. B. Beam. 2002. Nimblewill control in cool-season turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 115. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=115
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 53 |
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