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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2008.pdf#page=70
Last checked: 07/16/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | McDonald, S. J. |
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| Author Affiliation: | Turfgrass Disease Solutions, LLC, Pottstown, PA |
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| Title: | Early post-emergent control of smooth crabgrass and bull paspalum with tank-mixes of various herbicides |
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| Section: | Turfgrass and plant growth regulators I
Other records with the "Turfgrass and plant growth regulators I" Section
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| Meeting Info.: | Philadelphia, Pennsylvania: January 7-10, 2008 |
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| Source: | Proceedings of the Sixty-Second Annual Meeting of the Northeastern Weed Science Society. Vol. 62, 2008, p. 52. |
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| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Digitaria ischaemum; Herbicide combinations; Herbicide efficacy; Herbicide evaluation; Mesotrione; Paspalum setaceum; Postemergence weed control; Tank mix
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| Abstract/Contents: | "Smooth crabgrass (Digitaria ischaemum) and Paspalum species are problematic grassy weeds in cool-season turfgrass. In southeastern Pennsylvania, bull or thin paspalum (Paspalum setaceum Michx.) has been observed inhibiting many low-maintenance areas. Two sequential applications of MSMA are the standard approach employed to control paspalum species. In a pilot study conducted in 2006, it was observed that sequential applications of mesotrione at various rates + 0.25% v/v nonionic surfactant caused significant injury to mature bull paspalum and smooth crabgrass. Other researchers have reported that there are possible synergistic effects of mixing mesotrione with other herbicides. Therefore, the objective of this trial was to evaluate mesotrione applied alone and tank-mixed with selected herbicides and compare those treatments to the commercial standard (MSMA) for their ability to post-emergently control smooth crabgrass and bull paspalum in a stand of fine fescue turf. Including the untreated control, there were a total of twelve treatments in this experiment. Mesotrione (8.0 fl oz/A) was applied alone and tank mixed with quinclorac (1 lb product/A), fenoxaprop (20 fl oz/A), carfentrazone (6.7 fl oz/A), sulfentrazone (4.0 fl oz/A), and fluazifop (24.0 fl oz/A). Sulfent razone (4.0 fl oz/A) was applied alone and tank-mixed with quinclorac (1 lb product/A). Carfentrazone (6.7 fl oz/A) and quinclorac (1 lb product/A) were also applied alone. Nonionic surfactant and spray adjuvant were added as suggested by individual product labels. Initially, the site consisted of 70-85% cover by fine fescue. Treatments were initially applied on 13 June 2007 when smooth crabgrass was in the 6-7 leaf stage with 2-3 tillers and paspalum was in the 2-4 leaf stage. Treatments were first applied 17 days after paspalum emergence. All treatments were re-applied on 1 July 2007. The experimental design was a randomized complete block design with three replications. The site was mowed weekly at 3 inches with a rotary mower. One week after treatment (1 WAT), plots treated with mesotrione-alone or any combination of mesotrione plus another herbicide induced significant injury to both crabgrass and paspalum (>2.0 on 0 to 5 scale). The level of injury was equal the MSMA treated plots. At 2 WAT, the highest level of treatment induced injury to crabgrass and paspalum was observed in plots treated with mesotrione-alone, mesotrione + fenoxaprop, mesotrione + fluazifop and MSMA-alone. The highest level of desirable turf (fine fescue) injury occurred in plots treated with mesotrione mixed with quinclorac and MSMA. In this trial, few distinct differences between the mesotrione-alone and the mixtures in the level of crabgrass and paspalum control were observed. Two applications of mesotrione-alone at (8.0 fl oz/A) provided a high level of control of smooth crabgrass and bull paspalum. Plots treated alone with carfentrazone-alone, sulfentrazone-alone, and quinclorac-alone had equal percent plot area covered by paspalum as the untreated control throughout the entire trial." |
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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):
McDonald, S. J. 2008. Early post-emergent control of smooth crabgrass and bull paspalum with tank-mixes of various herbicides. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 62:p. 52. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2008.pdf#page=70
Last checked: 07/16/2013
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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