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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1992_vol46.pdf#page=125
Last checked: 07/24/2013
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): | Hamilton, G. W. Jr.;
Watschke, T. L.;
Clark, J. M. |
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| Author Affiliation: | Penn State University--Supervisor; Professor, Turfgrass Science; Research Technologist |
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| Title: | Pre/postemergence and postemergence control of smooth crabgrass |
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| Source: | Proceedings of the 46th Annual Meeting of the Northeastern Weed Science Society. Vol. 46, 1992, p. 125-126. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Digitaria ischaemum; Postemergence herbicides; Preemergence herbicides; Control
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| Abstract/Contents: | "Two experiments were conducted to evaluate the control of smooth crabgrass (Digitaria ischaemum (Schreb.) Muhl.) with selected preemergence and postemergence herbicides and their combinations. The postemergence study was conducted on a blend of turf-type tall fescue, and the pre/postemegence [pre/postemergence] study was conducted on a blend of perennial rygrass [ryegrass]. Treatments of both studies were arranged in a randomized complete block design with three replications. Treatments wre applied with a 0.9 m, CO[subscript]2 powered boom sprayer, delivering 374 l/ha with two T-jet 6504 nozzles. The pre/postemergence treatments were applied on July 7 and the postemergence treatments on July 12. The crabgrass was in the 3 to 5 tiller stage in both studies at the time of application. Crabgrass control was rated on a scale of 0 to 100%, with 80% being considered acceptable control. Both studies were rated on August 27. In the pre/postemergence study, prodiamine at 0.43 kg ai/ha combined with fenoxaprop-ethyl at 0.20 kg ai/ha provided the best control of crabgrass (93%). Prodiamine at 0.56 kg ai/ha combined with either fenoxaprop-ethyl at 0.13 kg ai/ha or MSMA at 2.24 kg ai/ha, and fenoxaprop-ethyl alone at 0.20 kg ai/ha also provided acceptable control. In the postemergence study, quinclorac at 0.84 kg ai/ha and fenoxaprop-ethyl at 0.20 kg ai/ha provided the best postemergence control of crabgrass. (There were duplicate treatments of quinclorac at 0.84 kg ai/ha in anticipation that follow-up applications may have to be made.) Quinclorac applied at 0.56 kg ai/ha was insufficient to provide control from a single application. Previous research has indicated the need for two sequential applications at 0.56 kg ai/ha to provide equivalent to one application at 0.84 kg ai/ha." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hamilton, G. W. Jr., T. L. Watschke, and J. M. Clark. 1992. Pre/postemergence and postemergence control of smooth crabgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 46:p. 125-126. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1992_vol46.pdf#page=125
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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Digitally in TIC by file name: newss1992 |
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