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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2006.pdf#page=96
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is withn 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): | Ricker, D. B.;
Willis, J. B.;
Askew, S. D. |
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| Author Affiliation: | Virginia Tech, Blacksburg, Virginia |
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| Title: | Potential synergistic combinations with mesotrione |
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| Section: | Research posters
Other records with the "Research posters" Section
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| Meeting Info.: | Providence, RI: January 3-6, 2006 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 60, 2006, p. 91. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Digitaria ischaemum; Mesotrione; Crabgrass control; Turf recovery; Weed control; Herbicide combinations; Herbicide injury; Quinclorac
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| Abstract/Contents: | "Managing high quality turfgrass in the transition zone requires the use of herbicides to control weed infestations. Smooth crabgrass (Digitaria ischaemum) infests most turfgrass species and is a chronic problem. Mesotrione has controlled crabgrass in several university trials but complete control often requires sequential treatments. Recent research at Virginia Tech and University of Tennessee suggest that certain herbicides applied in combination with mesotrione may improve grassy weed control compared to mesotrione alone. Our objective was to evaluate several herbicide admixtures with mesotrione in an attempt to make single treatments more effective or improve crabgrass control from single or sequential treatments. Two field trials were conducted at the Virginia Tech Turfgrass Research Center in Blacksburg, Virginia during the summer of 2005. Site one contained 'Kelly' Kentucky bluegrass (Poa pratensis) and site two contained a variety of cool-season and warm-season grasses, mainly fescue (Festuca sp.), perennial ryegrass (Lolium perenne L.), common bermudagrass (cynodon sp.), and areas of creeping bentgrass (Agrostis palustris), all varieties unknown. Site one had a severe infestatin of 80-95% smooth crabgrass and 40-60% smooth crabgrass at site two. Smooth crabgrass at both sites was in the mature, 5-15 tiller stage of growth. For both trials the experimental design was a five-by-two-by-two factorial arrangement with plot sizes of 2 m by 2 m. The first factor consists of five admixtures including, bentazon at 0.28 kg ai/ha, bromoxynil at 0.28 kg ai/ha, carfentrazone-ethyl at 0.035 kg ai/ha, MSMA at 1.68 kg ai/ha, and quinclorac at 0.84 kg ai/ha. The second factor consists of mesotrione at 0.14 kg ai/ha mixed with the above herbicides or nothing was mixed and the herbicides were applied alone. Finally, all the aforementioned treatment options were either followed by a sequential mesotrione treatment at 0.14 kg ai/ha three weeks later or not. Comparison treatments included a non-treated control for a total of 23 treatments. Adjuvants were added as suggested by herbicide labels and included 1% v/v of crop oil concentrate (COC) with quinclorac and 0.25% v/v noninonic surfactant with mesotrione, bromoxynil, and bentazon. All treatments controlled mature smooth crabgrass better 6 weeks after treatment (WAT) when mesotrione was in admixture adn when followed by a three-week sequential mesotrione treatment. Quinclorac mixed with mesotrione followed by mesotrione and MSMA mixed with mesotrione followed by mesotrione controlled smooth crabgrass 91 and 93%, respectively at both sites 6 WAT. Mesotrione followed by mesotrione controlled smooth crabgrass 50% 6 WAT. Less than 10% turf injury was observed as whitening of the leaf blades 1 WAT when treatmens contained mesotrione. Quinclorac mixed with mesotrione followed by mesotrione injured turf 35% 1 week after the sequential treament. All turf recovered quickly and no injury was recorded 2 weeks after mesotrione treatments or of the remainder of the experiment." |
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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):
Ricker, D. B., J. B. Willis, and S. D. Askew. 2006. Potential synergistic combinations with mesotrione. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 60:p. 91. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2006.pdf#page=96
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is withn a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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