Full TGIF Record # 42231
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Web URL(s):http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=42
    Last checked: 07/24/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Derr, J. F.
Author Affiliation:Visiting Scientist, Department of Plant Science, Rutgers University
Title:Pendimethalin plus fenoxaprop for crabgrass control in Kentucky bluegrass
Meeting Info.:Newport, RI; January 6-9, 1997
Source:Proceedings of the 51st Annual Meeting of the Northeastern Weed Science Society. Vol. 51, 1997, p. 42.
Publishing Information:College Park, MD: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Application methods; Comparisons; Crabgrass control; Digitaria; Herbicide efficacy; Herbicide evaluation; Herbicide rates; Pendimethalin + Fenoxaprop-ethyl; Poa pratensis; Postemergence weed control; Preemergence weed control; Tank mix
Cultivar Names:Baron
Abstract/Contents:"A prepackaged tank mix of pendimethalin plus fenoxaprop was evaluated for preemergence and postemergence crabgrass control in an established stand of 'Baron' Kentucky bluegrass (Poa pratensis L.). In the first study, the pendimethalin plus fenoxaprop tank mix was applied at two rates: 2.0 plus 0.06 lb ai/A, and 4.0 plus 0.12 lb ai/A. These two treatments were applied at the one to two leaf stage of crabgrass, and at the early tillering stage. A 0.57 lb ai/gal formulation of fenoxaprop was applied at 0.12 lb/A for comparison. At one month after application, both rates of the tank mix gave 100% control of large crabgrass [Digitaria sanguinalis (L.) Scop.] and smooth crabgrass [Digitaria ischaemum (Schreb. ex Schweig.) Schreb. ex Muhl.]. About 90% crabgrass control was observed one month after treatment with fenoxaprop applied alone at either crabgrass growth stage. By the end of August, no crabgrass plants were observed at the higher rate of the tank mix applied at the early tillering stage, with less that 1 crabgrass plant per plot with the earlier application timing. Crabgrass counts at the lower rate of the tank mix were 9.3 and 4.0 at the earlier and later timing were 12 and 10, respectively. Approximately 100 crabgrass plants per plot were observed in untreated plots. Fenoxaprop and the higher rate of the combination product injured Kentucky bluegrass, but injury did not exceed 20%. Injury to Kentucky bluegrass decreased over time. In the second study, the pendimethalin plus fenoxaprop tank mix was applied at three rates: 1.5 plus 0.05 lb/A, 2.0 plus 0.06 lb/A, and 3.0 plus 0.9 lb/A at the early tillering stage of crabgrass. These three treatments were applied at 25 gal/A using flat fan nozzles, and at 80 gal/A using a spray gun. For cooparison, dithiopyr was applied at 0.5 lb/A and fenoxaprop was applied at 0.09 lb/A using both methods of application. All flat fan applications of the tank mix gave 90% or greater control of crabgrass at one month after application. Control using the spray gun ranged from 70% at the lowest rate to 88% at the two higher rates. Fenoxaprop gave 95% control using flat fan nozzles, but only 78% control using the spray gun. Dithiopyr gave approximately 80% crabgrass control with both methods of application."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Derr, J. F. 1997. Pendimethalin plus fenoxaprop for crabgrass control in Kentucky bluegrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 51:p. 42.
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http://www.newss.org/proceedings/proceedings_1997_vol51.pdf#page=42
    Last checked: 07/24/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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