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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=331
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Atkinson, J. L.;
McCarty, L. B.;
Estes, A. G. |
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| Author Affiliation: | Clemson University, Clemson, SC |
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| Title: | Preemergence and postemergence doveweed (Murdannia nudiflora (L.) Brenan) control |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Houston, Texas: January 28-30, 2013 |
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| Source: | Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 244. |
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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: Application timing; Comparisons; Germination; Golf rough; Herbicide efficacy; Herbicide evaluation; Murdannia nudiflora; Postemergence weed control; Preemergence weed control
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| Abstract/Contents: | "Doveweed (Murdannia nudiflora (L.) Brenan) is a problematic weed of golf course roughs, fairways and tees that germinates much later in the growing season than traditional summer annual grassy weeds such as crabgrass (Digitaria spp.) and goosegrass (Eleusine indica (L.) Gaertn.). Due to its late germination period, traditional early spring application of preemergence herbicides generally lack adequate residual for full season doveweed control, making identification of alternate control strategies necessary. Previous research demonstrated the efficacy of several pre and post-emergence herbicides on doveweed. Specticle 7.4 SC 9 fl oz/ac (Indaziflam) and Tower 6 L 32 fl oz/ac (Dimethenamid-p) provided approximately 12 and 6 weeks of preemergence control, respectively, when applied between May 1 and May 15 in Augusta, GA. Post-emergence herbicide applications of Blindside 66 WDG (Sulfentrazone, Metsulfuron-methyl), Celsius 68 WDG (Thiencarbazone-methyl, Iodosulfuron-methyl-sodium, Dicamba), and Speedzone 2.2 L (Carfentrazone-ethyl, 2,4-D, Mecoprop-p acid, Dicamba) provided between 70 and 90% control 2 WAIT then <40% control 4 WAIT. When applied alone, pre and post-emergence herbicides will not provide adequate long-term control; thus, sequential post emergence applications or tank mixtures of post and pre-emergence herbicides followed by a post-emergence herbicide may prove as alternate strategies for long-term doveweed control. The goal of this research was to compare preemergence herbicides applied to target doveweed's late germination period to alternate strategies for long-term doveweed control. Treatments included Tower 32 fl oz/ac and Specticle 9 fl oz/ac applied May 15, 2012, Speedzone 4pt/ac fb Speedzone 4pt/ac, Speedzone 4 pt/ac + Tower 32 fl oz/ac fb Speedzone 4 pt/ac, Speedzone 4 pt/ac + Specticle 9 fl oz/ac fb Speedzone 4 pt/ac, Celsius 3.7 oz/ac fb Celsius 3.7 oz/ac, Celsius 3.7 oz/ac + Tower 32 fl oz/ac fb Celsius 3.7 oz/ac, Celsius 3.7 oz/ac + Specticle 9 fl oz/ac fb Celsius 3.7 oz/ac, Blindside 6.5 oz/ac fb Blindside 6.5 oz/ac, Blindside 6.5 oz/ac + Tower 32 fl oz/ac fb Blindside 6.5 oz/ac, Blindside 6.5 oz/ac + Specticle 9 fl oz/ac fb Blindside 6.5 oz/ac. Initial post-emergence and post-emergence + pre-emergence tank mixtures were applied June 25, 2012. Sequential applications were made 28 DAIT. The study was conducted at Augusta Country Club in Augusta, GA on irrigated golf course rough comprised of 'Tifway' bermudagrass. Applications were made using a CO2 powered sprayer calibrated at 20 GPA. Three treatment replications were applied on 1.5 X 2 meter plots. Visual ratings were based on a 0-100% scale, 0% indicating no control and 100% indicating complete control. All applications received a non-ionic surfactant at 0.25% V/V. ANOVA was evaluated with alpha at 0.05. Pre-emergence herbicides applied May 15 provided >=90% control July 26, or 10 WAIT while all post-emergence and post-emergence + pre-emergence herbicide tank mixtures provided similar control at the same rating date, 4 weeks after initial post-emergence herbicide application. Sixteen weeks after preemergence herbicide application and 10 weeks after initial post-emergence herbicide and post + pre-emergence herbicide tank mixtures, Specticle 9 fl/oz ac continued to provide >90% control while all other treatments provided <70% control. Sequential applications of post emergence herbicides provided <10% control 12 WAIT. Tank mixture of Tower and Specticle with initial post-emergence applications increased control ~40 and 60% respectively. Additional herbicides will continue to be evaluated for pre and post-emergence doveweed control along with alternate application timings to target doveweed's late germination period." |
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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):
Atkinson, J. L., L. B. McCarty, and A. G. Estes. 2013. Preemergence and postemergence doveweed (Murdannia nudiflora (L.) Brenan) control. South. Weed Sci. Soc. Proc. 66:p. 244. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=331
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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