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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=192
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Askew, S. D.;
Ricker, D. B.;
Willis, J. B.;
Grove, M. D. |
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| Author Affiliation: | Askew, Ricker and Willis: Virginia Tech, Blacksburg; Grove: ISK Biosciences Corporation, Houston, TX |
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| Title: | Tracking of flazasulfuron, foramsulfuron, and metsulfuron on creeping bentgrass |
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| Section: | Weed management in turfgrass
Other records with the "Weed management in turfgrass" Section
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| Meeting Info.: | Charlotte, North Carolina: January 24-26, 2005 |
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| Source: | Proceedings of the 58th Annual Meeting of the SouthernWeed Science Society. Vol. 58, 2005, p. 117. |
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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: Agrostis stolonifera; Flazasulfuron; Foramsulfuron; Herbicide evaluation; Herbicide injury; Herbicide residues; Metsulfuron methyl; Track-in
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| Abstract/Contents: | "Flazasulfuron (Flazasulfuron 25DF) is an experimental herbicide under evaluation for use in U.S. turfgrass. Like other sulfonylurea herbicides, flazasulfuron may injure sensitive turfgrass when dislodged from the treated area and deposited by equipment tires or foot traffic. In previous studies at Virginia Tech, foramsulfuron (Revolverā¢ .188 SC) has caused injury tracks when deposited to creeping bentgrass while metsulfuron (Manorā¢ 60DF) has not. Thus, these two herbicides represent a high and low tracking potential, respectively. Research has not been previously conducted to evaluate the effect of time after treatment on likelihood of track injury. In addition, little is known about the ability of flazasulfuron to cause injury tracks when dislodged and deposited on creeping bentgrass. Therefore, two studies were conducted to evaluate flazasulfuron, metsulfuron, and foramsulfuron tracked at three timings after treatment for effects on neighboring creeping bentgrass and to determine the distance of visible track caused by three rates of flazasulfuron. Our objectives were to evaluate three flazasulfuron rates compared to metsulfuron and foramsulfuron for effects on creeping bentgrass when dislodged by mower tires, evaluate mower tracking at 6 h, 1 d, and 3 d after herbicide treatment and determine linear distance of visible track caused by three rates of flazasulfuron. Studies were conducted as randomized complete block designs with three replications. Two separate field trials were established in Blacksburg, VA on June 17 (timing study) and Oct 4 (distance study). Flazasulfuron was applied as a 25DF formulation at 0.5, 1.5 and 3.0 oz product/A, foramsulfuron was applied as Revolver .188 SC at 17.4 fl oz product/A, and metsulfuron was applied as Manor 60 DF at 1 oz product/A. Chemical treatments were applied to 6 x 6' perennial ryegrass plots and tracked to 6 x 6' (timing study) and 6 x 50' (distance study) creeping bentgrass plots. A riding fairway mower was driven over plots at 6 h, 1 d, and 3 d after treatment (timing study) and at 1 d after treatment (distance study). The 6 h timing was in the afternoon on dry turfgrass while all other timings were in the morning while dew was present on the turfgrass. No irrigation or rainfall was allowed on plots for at least 4 d. Cumulative length of tracks caused by all three mower tires was assessed in the timing study while total linear distance of the longest visible track was measured in the distance study. When applied 1 DAT, flazasulfuron caused increasing track injury with increasing rates between 0.5 and 3.0 oz/A when assessed 8 d after tracking. Foramsulfuron caused significant track length regardless of track timing while flazasulfuron only caused bentgrass injury when tracked 1 DAT and metsulfuron never injured creeping bentgrass. In the distance study 10 d after tracking, flazasulfuron-treated plots tracked the morning after treatment caused visible tracks on creeping bentgrass between 6 and 18 feet from the treated plot as rate increased from 0.5 to 3.0 oz/A. Based on a tire circumference of 3 feet, each 1 oz/A increase of Flazasulfuron 25DF rate resulted in two additional tire revolutions of creeping bentgrass injury. Turfgrass chlorosis also increased at rates of 8.7, 8.7, and 4.8% with each oz/A increase in Flazasulfuron 25DF rate when assessed at 1, 6, and 12 feet away from treated plots, respectively. Foramsulfuron caused more injury when tracked 1 DAT than when tracked at 6 h or 3 d after treatment. Since the typical use rate of flazasulfuron is 1.5 oz/A, it can be reasoned that flazasulfuron is less likely to cause tracks than foramsulfuron but more likely than metsulfuron. These data indicate that tracking of sulfonylurea herbicides is dependent on herbicide rate, time of tracking relative to herbicide treatment, and sensitivity of neighboring grasses to the herbicide in question." |
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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):
Askew, S. D., D. B. Ricker, J. B. Willis, and M. D. Grove. 2005. Tracking of flazasulfuron, foramsulfuron, and metsulfuron on creeping bentgrass. South. Weed Sci. Soc. Proc. 58:p. 117. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=192
Last checked: 07/18/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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