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| Web URL(s): | http://www.newss.org/proceedings/proceedings-2015.pdf#page=93
Last checked: 10/23/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary Only |
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| Author(s): | Vollmer, K. M.;
Askew, S. D.;
Walls, B.;
Hope, J. |
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| Author Affiliation: | Askew: Vice President, NEWSS Executive Committee and Chair, NEWSS 2015 Program Committee and Collegiate Weed Contest Committee; Virginia Tech, Blacksburg |
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| Title: | New herbicides for Virginia buttonweed control |
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| Meeting Info.: | Williamsburg, Virginia: January 5-8, 2015 |
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| Source: | Proceedings of the Sixty-ninth Annual Meeting of the Northeastern Weed Science Society. Vol. 69, 2015, p. 91. |
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| Publishing Information: | College Park, Maryland: The University of Maryland |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Diodia virginiana; Herbicide application; Herbicide evaluation; Indaziflam; Postemergence weed control; Sulfentrazone + Metsulfuron; Weed control
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| Trade Names: | Tribute Total; Blindside; Specticle |
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| Abstract/Contents: | "Virginia buttonweed (Diodia virginiana L., VB) continues to be one of the most troublesome weeds of southern turfgrass. Postemergence control can be achieved with metsulfuron or metsulfuron mixed with hormone herbicides but VB often recovers via seed germination or sprouts from surviving stem material within a few months of treatment. Better solutions are needed for long-term VB control. Three herbicides marketed in the last five years; Blindside (metsulfuron + sulfentrazone; FMC Corp), Tribute Total [foramsulfuron + halosulfuron + thiencarbazone (FHT), Bayer], and Specticle (indaziflam, Bayer); may offer improved VB control. Our objectives were to evaluate VB control with rates of metsulfuron + sulfentrazone with and without surfactant compared to metsulfuron and various programs that included indaziflam alone or in combination with FHT at different application times. Two studies were conducted as randomized complete block designs with 3 replications per treatment. Applications were made using a 1.5 m boom with XR 110003 nozzles delivering a flow rate of 274 L ha-1. Data were subjected to analysis of variance and means separated using Fisher's LSD (α = 0.05). In the first study, treatments included indaziflam applied at 33 or 49 g ai ha-1 on June 9, 2014, indaziflam at 33 g ha-1 on June 9, 2014 followed by thiencarbazone-methyl (22 g ai ha-1) + foramsulfuron (44 g ai ha-1) + halosulfuronmethyl (69 g ai ha-1) (FHT) on July 8, 2014, indaziflam applied on June 16, 2014 followed by FHT on August 8, 2014, and FHT alone applied on June 16, 2014. Treatments in the second study consisted of sulfentrazone (273 g ai ha-1) + metsulfuron (27 g ai ha-1), and sulfentrazone (421 g ai ha-1) + metsulfuron (42 g ai ha-1) each applied with and without the addition of non-ionic surfactant NIS (0.25% v/v) and compared to metsulfuron applied at 42 g ai ha-1. Indaziflam discolored VB up to 40% in the first 2 weeks but VB completely recovered. Indaziflam fb FHT at the early timings controlled VB 90% but VB completely recovered by October 9. Indaziflam fb FHT at the late timing controlled VB 97% and subsequent weather conditions prevented VB recovery. Metsulfuron + sulfentrazone with surfactant at either rate controlled VB up to 95% and superior to metsulfuron + sulfentrazone at the low rate without surfactant and metsulfuron. Metsulfuron combinations controlled VB for approximately 6 weeks but VB completely recovered from all treatments by October 9th in the metsulfuron study. These data suggest new herbicides may slightly improve VB control compared to standard programs but will not control VB season-long." |
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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):
Vollmer, K. M., S. D. Askew, B. Walls, and J. Hope. 2015. New herbicides for Virginia buttonweed control. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 69:p. 91. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings-2015.pdf#page=93
Last checked: 10/23/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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