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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=194
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): | Willis, J. B.;
Ricker, D. B.;
Askew, S. D. |
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| Author Affiliation: | Virginia Tech, Blacksburg |
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| Title: | Tracking of flazasulfuron, foramsulfuron, and metsulfuron on creeping bentgrass |
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| Section: | Weed management in turf grass
Other records with the "Weed management in turf grass" Section
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| Meeting Info.: | San Antonio, Texas: January 23-25, 2006 |
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| Source: | Proceedings: Southern Weed Science Society 59th Annual Meeting. Vol. 59, 2006, p. 121. |
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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; Dislodgeable residues; Flazasulfuron; Foramsulfuron; Herbicide efficacy; Herbicide evaluation; Metsulfuron methyl; Non-target effects; Spray drift
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| Abstract/Contents: | "Sulfonylurea herbicides may injure sensitive turfgrass when dislodged from treated areas and deposited by mower tires or foot traffic, known as tracking. Foramsulfuron (Revolverā¢ .188 SC) has caused tracking when deposited onto creeping bentgrass while metsulfuron (Manorā¢ 60DF) has not, in previous Virginia Tech research. Foramsulfuron and metsulfuron represent a high and low tracking potential, respectively. Flazasulfuron (Flazasulfuron 25DF) is under evaluation for registration in the US, its potential to track is not known. Research has not been previously conducted to evaluate the effect of time after treatment on likelihood of creeping bentgrass injury from tracked herbicide. In addition, little is known about the ability of flazasulfuron to track when dislodged and deposited on creeping bentgrass. The objectives of these studies were to evaluate the ability of flazasulfuron, foramsulfuron, and metsulfuron to cause injury when tracked onto creeping bentgrass 6, 24, and 72 hours after treatment (HAT), and to quantify the intensity and potential length of visible injury from tracked flazasulfuron. Five field studies were conducted in Blacksburg, VA in 2004 and 2005. Experimental design was randomized complete block, with three replications for each trial. For the "timing trials" a 5 by 3 factorial arrangement of treatments was used with 5 herbicide treatments; flazasulfuron at 0.5, 1.5 and 3.0 oz product/A, foramsulfuron at 17.4 fl oz product/A, and metsulfuron at 1 oz product/A, and 3 tracking timings; 6, 24, and 72 HAT. The "distance trials" had three treatments; flazasulfuron at 0.5, 1.5 and 3.0 oz product/A, tracked 24 HAT, both experiments included a nontreated comparison. Creeping bentgrass was established in strips adjacent to perennial ryegrass. Six by six foot perennial ryegrass plots were treated, and at the specified time, a triplex-greens mower was driven through the treated area and across a 6 by 6 foot (timing) or a 6 by 50 foot (distance) creeping bentgrass plot. The 6 hr tracking timing was in the afternoon with dry turfgrass while all other timings were in the morning with dew present. No irrigation or rainfall occurred on plots for at least 4 days after treatment (DAT). Appropriate interactions and main effects were separated using SAS procedure GLM. Only foramsulfuron caused significant reduction in color due to tracking when tracked 6 HAT on dry turfgrass, indicating that moisture must be present on treated surfaces for most herbicide to track onto and reduce color ratings of creeping bentgrass. When tracking 24 HAT, increasing flazasulfuron rates between 0.5 and 3.0 oz/A caused a noticeable decrease in turf color when assessed 10 and 20 DAT. Foramsulfuron caused tracks at all tracking timings while flazasulfuron only caused significant color reduction when tracked 24 HAT. Tracking metsulfuron never significantly injured creeping bentgrass. At 10 DAT, tracked flazasulfuron caused visible tracks on creeping bentgrass an average of 5 to 14 feet from the treated plot as rate increased from 0.5 to 3.0 oz/A. Based on a tire circumference of 3 feet, flazasulfuron at 3 oz/A tracked 4.5 tire revolutions. 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, presence of moisture on treated surfaces, 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: | "Vision for the future"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Willis, J. B., D. B. Ricker, and S. D. Askew. 2006. Tracking of flazasulfuron, foramsulfuron, and metsulfuron on creeping bentgrass. South. Weed Sci. Soc. Proc. 59:p. 121. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2006 Proceedings-SWSS.pdf#page=194
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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