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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=213
Last checked: 07/17/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Boyd, J. W.;
Richardson, M. D.;
McCalla, J. W. |
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| Author Affiliation: | University of Arkansas |
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| Title: | Herbicide tolerance of seedling bermudagrass and zoysiagrass |
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| Section: | Weed management in turf crops
Other records with the "Weed management in turf crops" Section
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| Meeting Info.: | Memphis, Tennessee: January 26-28, 2004 |
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| Source: | Proceedings: Southern Weed Science Society: 57th Annual Meeting. Vol. 57, 2004, p. 115. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Cynodon dactylon; Herbicide evaluation; Herbicide resistance; Seedlings; Zoysia japonica
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| Cultivar Names: | Zenith; Riviera |
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| Abstract/Contents: | "'Zenith' zoysiagrass and 'Riviera' bermudagrass were seeded at 1.0 lb PLS/1,000 sq ft on July 1, 2003 at the University of Arkansas Research Station in Fayetteville, AR. The site had been fumigated with methyl bromide. Herbicide treatments were applied at 2 weeks after emergence. Carrier volume was 50 gpa. Turfgrass cover was measured using digital image analysis. Herbicide treatments applied to zoysiagrass and bermudagrass in a tank mix with MSMA at 2.0 lb/ai/a were flazasulfuron (0.046 lb/ai/a), foramsulfuron (0.026 lb/ai/a), trifloxysulfuron (0.026 lb/ia/a), clopyralid (0.38 lb/ai/a), triclopyr + clopyralid (0.28 + 0.094 lb/ai/a) and 2,4-D + dicamba + mecoprop (0.87 + 0.23 + 0.09 lb/ai/a). Quinclorac was applied alone at 0.5 and 0.75 lb/ai/a to bermudagrass and zoysiagrass. Treatments unique to zoysiagrass were fenoxaprop + clopyralid + triclopyr (0.125 + 0.094 + 0.28 lb/ai/a) and metsulfuron + MSMA (0.015 + 2 lb/ai/a). Treatments applied to bermudagrass only included metribuzin + MSMA (0.38 lb + 2.0 lb/ai/a) and metsulfuron + MSMA (0.028 + 2.0 lb/ai/a). At 7 DAT (days after treatment), percent bermudagrass groundcover for metribuzin + MSMA, triclopyr + clopyralid + MSMA and 2,4-D + dicamba + mecoprop + MSMA was 24, 64 and 79%, respectively compared to 95% for the untreated control. At 21 DAT, seedling bermudagrass cover was greater than 97% for all herbicide treatments except metribuzin + MSMA. Percent cover for the metribuzin + MSMA treatment was 89% compared to 99% for the untreated control. At 21 DAT, seedling zoysiagrass cover was greater than 90% for all herbicide treatments except fenoxaprop + clopyralid + triclopyr and metsulfuron + MSMA. Percent cover for fenoxaprop + clopyralid + triclopyr, flazasulfuron + MSMA and metsulfuron + MSMA was 45, 61 and 82%, respectively, compared to 98% for the control. A second Riviera bermudagrass trial was located on a non-fumigataed site at a sod farm near Little Rock, AR. It was seeded at 1.0 lb PLS/1,000 sq ft on June 24, 2003. Herbicide treatments were applied at 2 weeks after emergence. Herbicide injury and weed control were rated on a 0 to 100 scale with 0 being no injury or weed control and 100 being dead turf or dead weeds. Carrier volume was 30 gpa. Metribuzin + MSMA produced 87% injury at 7 DAT. However, injury from this treatment dropped to 27% at 21 DAT. Injury from 2,4-D + dicamba + mecoprop + MSMA was 30% at 7 DAT, but declined to 7% at 21 DAT. Weeds at the Little Rock site included large crabgrass (Digitaria sanguinalis), purslane (Portulaca oleracea), tighthead sprangletop (Leptochloa fasicularis), rice flatsedge (Cyperus iria), barnyardgrass (Echinochloa crus-galli), broadleaf signalgrass (Urochloa platyphylla), and tufted lovegrass (Eragrostis pectinacea). Treatments containing MSMA provided 95 to 100% control of all weeds except tufted lovegrass. Quinclorac alone at 0.5 and 0.75 lb/ai/a gave 100% control of barnyardgrass, 80% control of broadleaf signalgrass and 50% control of large crabgrass, but failed to provide control of sprangletop, purslane and rice flatsedge." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Boyd, J. W., M. D. Richardson, and J. W. McCalla. 2004. Herbicide tolerance of seedling bermudagrass and zoysiagrass. South. Weed Sci. Soc. Proc. 57:p. 115. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=213
Last checked: 07/17/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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