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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=370
Last checked: 07/25/2013
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.;
Brosnan, J. T.;
Breeden, G. K. |
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| Author Affiliation: | Lewis, Sorochan, Brosnan and Breeden: Plant Sciences, University of Tennessee, Knoxville, TN; McElroy: Agronomy and Soils, Auburn University, Auburn, AL |
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| Title: | Evaluation of various graminicides for selective bermudagrass control in zoysiagrass fairways |
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| Section: | SWSS - M.S. Oral Paper Contest
Other records with the "SWSS - M.S. Oral Paper Contest" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 300. |
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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: Application rates; Aryloxyphenoxypropionic herbicides; Cultivar evaluation; Cyhalofop-butyl; Cynodon dactylon x Cynodon transvaalensis; Fenoxaprop-ethyl; Fluazifop; Graminicide; Herbicide combinations; Herbicide evaluation; Herbicide injury; Phytotoxicity; Quizalofop; Triclopyr; Weed control; Zoysia; Zoysia japonica
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| Cultivar Names: | Tifway; Zenith; Palisades; Diamond |
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| Abstract/Contents: | "Graminicides are used for selective control of grassy weed species. Aryloxyphenoxypropionate (AOPP) herbicides are members of the graminicide chemical family used to control bermudagrass (Cynodon dactylon). However, applying these materials alone can cause phytotoxic injury to other turfgrass species, such as zoysiagrass (Zoysia spp.). While research has shown that applications of these materials can be safened when tank-mixed with triclopyr, there is no data illustrating the extent of bermudagrass control and zoysiagrass tolerance when these two herbicides are combined. Research was conducted to evaluate the efficacy of various AOPP graminicides applied alone, and tank-mixed with triclopyr, for selective bermudagrass control in zoysiagrass fairways. Treatments included: triclopyr (1.12 kg ai/ha); fluazifop (0.11 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). Each treatment was applied three times on a 28 day interval to the following turfgrasses: 'Tifway' bermudagrass (Cynodon dactylon x transvaalaensis); 'Diamond' zoysiagrass [Zoysia matrella (L.) Merr.]; 'Palisades' zoysiagrass (Zoysia japonica Steud.); and 'Zenith' zoysiagrass (Zoysia japonica Steud.). All sites were maintained as golf course fairways with respect to irrigation, fertility, and mowing. Plots (2.25m2) were arranged in a randomized complete block design with four replications. Herbicides were applied with a CO2 pressurized sprayer calibrated at 280 L/ha. Bermudagrass control was visually rated every two weeks on a 0-100% scale (0%=no visible turfgrass injury; 100%=complete turfgrass death), with >70% injury considered acceptable control. Zoysiagrass injury was also rated visually using the same 0-100% scale, with <15% injury considered acceptable tolerance. In addition, percent turfgrass cover was evaluated every two weeks using digital image analysis (DIA) and correlated with visual ratings. Fluazifop, fenoxaprop, cyhalofop, and quizalofop applied alone did not provide acceptable bermudagrass control (<70%). However, when applied in combination with triclopyr, fluazifop, fenoxaprop, and quizalofop provided acceptable levels of bermudagrass control (>70%). Triclopyr alone resulted in a notable level of control as well (47.5%). All herbicides caused unacceptable injury to 'Diamond' zoysiagrass (>17.5%). Applications of fluazifop, fenoxaprop, and quizalofop applied alone resulted in unacceptable injury to both 'Palisades' and 'Zenith' zoysiagrass (>23%); however, tank-mixing triclopyr with these graminicides reduced phytotoxic injury to acceptable levels (<15%)." |
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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, J. T. Brosnan, and G. K. Breeden. 2009. Evaluation of various graminicides for selective bermudagrass control in zoysiagrass fairways. South. Weed Sci. Soc. Proc. 62:p. 300. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=370
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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