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| Web URL(s): | http://usgatero.msu.edu/v11/n03.pdf
Last checked: 02/23/2012
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Brosnan, James T.;
Breeden, Gregory K. |
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| Author Affiliation: | Brosnan: Assistant Professor; Breeden: Extension Assistant II, Department of Plant Sciences, University of Tennessee, Knoxville, TN |
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| Title: | Application timing affects the efficacy of herbicides used for control of bermudagrass in zoysiagrass fairways |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 11, No. 3, March 1 2012, p. [1-8]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Application timing; Bermudagrass control; Cynodon dactylon; Fluazifop; Herbicide efficacy; Seasonal behavior; Transition zone; Triclopyr; Winter dormancy; Zoysia
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| Cultivar Names: | Zenith; Riviera |
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| Trade Names: | Turflon Ester |
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| Abstract/Contents: | "Zoysiagrasses (Zoysia spp.) are commonly used on golf course fairways throughout the United States transition zone. Bermudagrass (Cynodon dactylon) is a troublesome weed of zoysiagrass golf course fairways. Field research was conducted at the University of Tennessee during 2009 and 2010 evaluating the seasonal variability of bermudagrass to applications of fluazifop (Fusilade II) plus triclopyr (Turflon Ester). Results include: Bermudagrass was most susceptible to applications of fluazifop and triclopyr when transitioning out of winter dormancy in spring or transitioning into winter dormancy in fall. Cooling accumulation may be a signal to turf managers that plants are beginning to transition into winter dormancy before visual signs of this transition are apparent and thus are more susceptible to herbicide treatment. Applications made when average daily air temperature fell below 72 F provided the greatest suppression each year. Increasing the rate of fluazifop above 0.10 kg ai ha-1 did not improve efficacy for treatments applied to bermudagrass at optimal timings. When applied at sub-optimal summer timings, increased rates of fluazifop resulted in greater bermudagrass suppression. Except for a single summer timing in 2010, zoysiagrass injury from fluazifop plus triclopyr at labeled rates never exceeded 5%." |
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| Language: | English |
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| References: | 16 |
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| See Also: | Original version appears in Weed Technology, 25(4) October-December 2011, p. 591-597, with variant title "Application timing affects bermudagrass suppression with mixtures of fluazifop and triclopyr", R=193483 R=193483 |
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| Note: | Summary as abstract
Partial reprint appears in TURFNews, April 2012, p. 12
Partial reprint appears in Turfgrass Trends, April 2012, p. 31-35
Pictures, color
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brosnan, J. T., and G. K. Breeden. 2012. Application timing affects the efficacy of herbicides used for control of bermudagrass in zoysiagrass fairways. USGA Turfgrass Environ. Res. Online. 11(3):p. [1-8]. |
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| Web URL(s):
http://usgatero.msu.edu/v11/n03.pdf
Last checked: 02/23/2012
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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