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| Web URL(s): | http://www.newss.org/proceedings/proceedings-2014.pdf#page=95
Last checked: 10/05/2015
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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): | Jordan, H.;
McCullough, P. |
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| Author Affiliation: | University of Georgia, Griffin, GA |
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| Title: | Efficacy of dithiopyr for postemergence smooth crabgrass control in warm and cool-season grasses |
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| Section: | Turfgrass and plant growth regulators - Session I
Other records with the "Turfgrass and plant growth regulators - Session I" Section
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| Meeting Info.: | Philadelphia, Pennsylvania: January 6-9, 2014 |
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| Source: | Proceedings of the Sixty-eighth Annual Meeting of the Northeastern Weed Science Society. Vol. 68, 2014, p. 95. |
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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: Application timing; Cool season turfgrasses; Crabgrass control; Cynodon; Digitaria ischaemum; Dithiopyr; Festuca arundinacea; Herbicide efficacy; Herbicide evaluation; Postemergence weed control; Pyridine herbicides; Quinclorac; Sethoxydim; Warm season turfgrasses
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| Cultivar Names: | Talladega |
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| Abstract/Contents: | "Dithiopyr is a pyridine herbicide that provides pre- and early postemergence control of smooth crabgrass in turfgrass. The objective of this research was to evaluate formulation and application timing on efficacy of dithiopyr for smooth crabgrass control in bermudagrass and tall fescue. Experiment 1 was conducted on a common bermudagrass field, and Experiment 2 was conducted on a 'Talladega' tall fescue field. Bermudagrass and tall fescue were mowed weekly during active growth at 5 and 7.5-cm heights with a rotary mower, respectively, and irrigated as needed to prevent wilting. For the tall fescue experiment, treatments included dithiopyr 2 EW at 0.56 kg a.i. ha-1, dithiopyr 0.27 GR at 0.56 kg a.i. ha-1, and quinclorac at 0.84 kg a.i. ha-1. For the bermudagrass study, treatments included dithiopyr 2 EW at 0.56 kg ha-1, dithiopyr 0.27 GR at 0.56 kg ha-1, and sethoxydim at 0.28 kg a.i. ha-1. Treatments were applied at three growth stages of smooth crabgrass including multi-leaf, 1 to 2 tiller, and 3 to 5 tiller. An untreated check was included in both experiments. In the tall fescue experiment, all treatments provided ā„88% control of multi-leaf and 1 to 2 tiller smooth crabgrass in late June. By late August, dithiopyr 2EW provided good control (>80%) of smooth crabgrass at the multi-leaf timing, but control from tillered timings was poor (<70%). Dithiopyr 0.27 GR provided fair control (70 to 79%) of smooth crabgrass by late August at the multi-leaf and one-tiller timing, but treatments at multi-tiller timing provided poor control. By late August, quinclorac treatments in tall fescue at the multileaf treatment provided poor control, while treatments at the 1 to 2 tiller and 3 to 5 tiller timings provided fair control. In the bermudagrass experiment, both dithiopyr formulations controlled smooth crabgrass 78% in June, but control was poor by late August. Dithiopyr treatments provided poor control of tillered smooth crabgrass in June and August. Sethoxydim excellent control of multi-leaf and 1 to 2 tiller smooth crabgrass in June but control declined to 71% by August. Sethoxydim provided fair control of 3 to 5 tiller smooth crabgrass in June, but control was poor by August. Dithiopyr and quinclorac treatments did not significantly injure tall fescue. Dithiopyr did not significantly injure bermudagrass, but sethoxydim caused unacceptable injury (>20%) on several dates." |
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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):
Jordan, H., and P. McCullough. 2014. Efficacy of dithiopyr for postemergence smooth crabgrass control in warm and cool-season grasses. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 68:p. 95. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings-2014.pdf#page=95
Last checked: 10/05/2015
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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