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Web URL(s): | http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=76 Last checked: 07/23/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Lycan, D. W.;
Hart, S. |
Author Affiliation: | Rutgers University, New Brunswick, New Jersey |
Title: | Potential use of bispyribac for annual bluegrass control in cool-season turfgrass |
Section: | Research poster section Other records with the "Research poster section" Section
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Meeting Info.: | Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004 |
Source: | Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 76. |
Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Bispyribac-sodium; Cool season turfgrasses; Festuca arundinacea; Festuca rubra subsp. commutata; Herbicide efficacy; Herbicide evaluation; Herbicide resistance; Lolium perenne; Poa annua control; Poa pratensis
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Cultivar Names: | Houndog; Gnome; Jet; Shadow II |
Abstract/Contents: | "Previous studies have shown that bispyribac-sodium has activity on annual bluegrass (Poa annua L.) in creeping bentgrass (Agrostis stolonifera L.). However, the relative tolerance of other cool-season turfgrass is not well understood. Field experiments were conducted in the summer of 2002 and 2003 at Adelphia, New Jersey to evaluate the tolerance of four cool-season turfgrass species to varying rates of bispyribac. Bispyribac was applied at 37, 74, 111, 148, and 296 g ai/ha to mature stands of Kentucky bluegrass (Poa pratensis L. `Gnome'), perennial ryegrass (Lolium perenne L. `Jet'), tall fescue (Festuca arundinacea Schreb. `Houndog 5'), and chewings fine fescue (Festuca rubra L. ssp. commutata Gaudin `Shadow II'). All applications were made to 0.9 × 3.0 m plots with a CO2 backback sprayer delivering 374 L/ha. Visual injury was evaluated and clippings were collected from the interior of each plot at 35 and 70 days after treatment (DAT) to determine the response of each species. Clippings were dried and weighed and expressed as percent of nontreated check. Visual injury on all species at 35 DAT increased with increasing bispyribac rate. Kentucky bluegrass injury reached 27% when bispyribac was applied at 296 g/ha. Injury on other species did not reach 20%. Initial injury was primarily in the form of discoloration on perennial ryegrass, tall fescue, and fine fescue. Kentucky bluegrass exhibited more severe stunting and thinning symptoms. Bispyribac at 37 to 296 g/ha reduced Kentucky bluegrass clipping weights by 5 to 35%, respectively, as compared to the nontreated check at 35 DAT in 2002. Initial perennial ryegrass, tall fescue, and fine fescue injury dissipated to 5% or less by 70 DAT. However, recovery of Kentucky bluegrass was less complete. These studies suggest that bispyribac can severely injure Kentucky bluegrass. Kentucky bluegrass may not adequately tolerate bispyribac at rates necessary for annual bluegrass control. Perennial ryegrass, tall fescue, and fine fescue may show initial symptoms of injury, but levels are less severe and persistent than those exhibited by Kentucky bluegrass." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lycan, D. W., and S. Hart. 2004. Potential use of bispyribac for annual bluegrass control in cool-season turfgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 76. |
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| Web URL(s): http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=76 Last checked: 07/23/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 610 .N62 v. 57 |
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