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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=211
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): | Breeden, G. K.;
McElroy, J. S.;
Rhodes, G. N. Jr. |
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| Author Affiliation: | University of Tennessee |
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| Title: | Tall ironweed (Vernonia altissima) control in tall fescue (Festuca arundinacea) pastures |
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| Section: | Weed management - pastures & rangeland
Other records with the "Weed management - pastures & rangeland" 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 Southern Weed Science Society. Vol. 58, 2005, p. 136. |
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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: Festuca arundinacea; Fluroxypyr; Herbicide efficacy; Pastures; Picloram; Triclopyr; Veronica altissima; Weed control; Weed profile
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| Trade Names: | Surmount; Pasturegard |
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| Abstract/Contents: | "Tall ironweed (Vernonia altissima) is a troublesome, difficult to control perennial weed in Tennessee pastures, and it can be found anywhere from rolling hills to creek bottoms. Tall ironweed reproduces both from seed and vegetatively from root crowns, making it persistent and giving it the ability to spread across pastures. Clipping can aid in reducing infestations, yet, this alone only slows the spread of tall ironweed. Sometimes re-establishment of the pasture is needed for control of troublesome weeds like tall ironweed. If pasture re-establishment is not an option the use of a timely herbicide application can be useful in reducing infestations of tall ironweed. Surmount (picloram + fluroxypyr) and Pasturegard (triclopyr + fluroxypyr), labeled in 2004 for use in cool-season grass forages, could potentially improve control of many difficult to control weeds. Field research was initiated to evaluate the efficacy of Surmount and Pasturegard on tall ironweed. Research was conducted at Tellico Plains, TN in 2004. The experiment was replicated 4 times in a randomized complete block design. Experimental units were 10 ft. wide by 30 ft. long. Treatments included in this research were 2,4-D Ester (1 qt/A), Banvel (1 qt/A), Redeem R&P (1 qt/A), Crossbow (1 and 2 qt/A), Grazon P+D (1 and 2 qt/A), Pasturegard (3 pt/A), and Surmount (3 pt/A). Herbicides were applied in a water carrier volume of 15 GPA with a CO2 pressurized sprayer. Weed control and crop injury were evaluated visually utilizing a 0 (no weed control or crop injury) to 100 (complete control of all weeds or crop) % scale. Excellent (90% or greater) control of tall ironweed was observed at 4 weeks after application (WAA) with Crossbow at 2 qt/A, Grazon P+D at 2 qt/A, Pasturegard, and Surmount. Tall ironweed control was < 80 % for all other treatments 4 WAA. Good (80-90%) control was observed 8 WAA with Redeem R&P and Crossbow at 1 qt/A. Excellent control was observed with Crossbow at 2 qt/A, Grazon P+D at 1 and 2 qt/A, Pasturegard, and Surmount 8 WAA. Unacceptable (65% or less) control was observed with 2,4-D Ester and Banvel. Excellent control was observed with all treatments except 2,4-D Ester and Banvel. No injury was observed on tall fescue at any of the rating dates. These data indicate that Pasturegard and Surmount are both safe for use on tall fescue. Both herbicides, as well as Crossbow at 2 qt/A and Grazon P+D at 2 qt/A, provided excellent control of tall ironweed throughout the season. Treatments that included triclopyr (Redeem R&P, Crossbow and Pasturegard) provided good to excellent control. This research indicates that there are several options to aid in control of tall ironweed, including the new herbicides Surmount and Pasturegard." |
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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):
Breeden, G. K., J. S. McElroy, and G. N. Jr. Rhodes. 2005. Tall ironweed (Vernonia altissima) control in tall fescue (Festuca arundinacea) pastures. South. Weed Sci. Soc. Proc. 58:p. 136. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2005 Proceedings-SWSS.pdf#page=211
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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