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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=259
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): | Lewis, D. F.;
McElroy, J. S.;
Sorochan, J. C.;
Breeden, G. K. |
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| Author Affiliation: | Department of Plant Science, University of Tennessee, Knoxville |
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| Title: | Safening of aryloxyphenoxypropionate herbicides by triclopyr on zoysiagrass |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Jacksonville, Florida: January 27-30, 2008 |
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| Source: | 2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 122. |
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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: Aryloxyphenoxypropionic herbicides; Bermudagrass control; Cynodon dactylon; Herbicide efficacy; Herbicide evaluation; Safeners; Tank mix; Triclopyr; Zoysia
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| Abstract/Contents: | "Bermudagrass (Cynodon dactylon) is a difficult weed to control in zoysiagrass (Zoysia spp.) fairways. Although it has been reported that bermudagrass can be suppressed by using aryloxyphenoxypropionate (AOPP), zoysiagrass injury can occur. Previous research indicates that tank-mixing AOPP herbicides, such as fluazifop and fenoxaprop, with triclopyr increased bermudagrass suppression and decreased zoysiagrass injury. Additional research of other AOPP herbicides tank-mixed with triclopyr could lead to improved selective herbicide programs for bermudagrass control in zoysiagrass turf. Research was conducted in 2007 at The Little Course in Franklin, TN and the University of Tennessee East Tennessee Research and Education Center (ETREC)-Plant Science Unit in Knoxville, TN. Treatments included are: fluazifop (0.11 kg ai/ha); triclopyr (1.12 kg ai/ha); fluazifop plus triclopyr (0.11 kg ai/ha + 1.12 kg ai/ha); fenoxaprop (0.14 kg ai/ha); fenoxaprop plus triclopyr (0.14 kg ai/ha + 1.12 kg ai/ha); cyhalofop (0.32 kg ai/ha); cyhalofop plus triclopyr (0.32 kg ai/ha + 1.12 kg ai/ha); quizalofop (0.09 kg ai/ha); and quizalofop plus triclopyr (0.09 kg ai/ha + 1.12 kg ai/ha).. Treatments were initiated at The Little Course to 'Palisade' zoysiagrass [Zoysia japonica (L.) Merr.] on June 05, 2007 and at the ETREC-Plant Science Unit to 'Zenith' zoysiagrass (Zoysia japonica) on June 11, 2007. Sequential applications were made every 28 days for a total of three applications of each treatment. Turfgrass injury was visually rated every two weeks utilizing a 0-100% scale (0%=no visible turfgrass injury; 100%=complete turfgrass death). Digital images were taken every two weeks for each plot utilizing a 0.28 m2 light box equipped with a Canon G5 digital camera. Images were analyzed for percent cover, hue, saturation, and brightness according to published methods. This trial was replicated four times in a randomized complete block design. Experimental units measured 1.5m x 3m2. Herbicide applications were applied with a CO2 pressurized sprayer calibrated at 280 L/ha. Injury and cover reduction data to zoysiagrass turf from The Little Course and the ETREC-Plant Science Unit was taken ten weeks after initial treatment. At The Little Course, fluazifop alone injured zoysiagrass 30% and reduced cover to 71%; however, when tank-mixed with triclopyr 3% injury and 84% cover was observed. Fenoxaprop alone led to 35% injury with 75% cover, but with the addition of triclopyr was lowered to 21% injury and 81% cover. Cyhalofop alone injured 4% with 89% cover, but the addition of triclopyr injured 9% with 87% cover. Quizalofop injured zoysiagrass the greatest 58% and severely reduced cover to 37%; however, when tank-mixed with triclopyr, quizalofop injured zoysiagrass only 15% and retained 84% cover. Triclopyr alone caused no visual injury with 87% cover. Similar results were observed at the ETREC-Plant Science Unit. These data indicate that triclopyr safens the use of the four AOPP herbicides when applied to both 'Palisade' and 'Zenith' zoysiagrass turf." |
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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):
Lewis, D. F., J. S. McElroy, J. C. Sorochan, and G. K. Breeden. 2008. Safening of aryloxyphenoxypropionate herbicides by triclopyr on zoysiagrass. South. Weed Sci. Soc. Proc. 61:p. 122. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=259
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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