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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=47
Last checked: 07/22/2013
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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): | Johnson, J.;
Lloyd, K.;
Sellmer, J. |
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| Author Affiliation: | Penn State, University Park, PA |
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| Title: | Suppression of annual grasses along highway guiderails |
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| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
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| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 31. |
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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: Annual grass weeds; Comparisons; Herbicide efficacy; Herbicide evaluation; Preemergence herbicides; Roadside turf; Tank mix; Weed control
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| Abstract/Contents: | "Annual grasses, such as foxtail (Setaria spp). Plague roadside bareground weed control areas. Limited herbicide half-life and rapid degradation due to environmental extremes make season-long control of annual grasses difficult. Preemergence grass herbicides were evaluated in tank mixes, as single or dual applications, and at two locations for control of late-season germinating annual grasses. The trial was established at guiderail locations in Washington County and Centre County, PA using a randomized complete block design with three replications. Ten herbicide combinations (kg ai/ha) and an untreated check were applied to 7.6 by 1.2 m plots. The herbicide combinations included sulfometuron at 0.16, chlorsulfuron at 0.08, and diuron at 7.19 alone, or combined with either pendimethalin at 4.46, oryzalin at 4.49 or 6.73, prodiamine at 1.64, imazapic at 0.21, rimsulfuron at 0.07, or sulfentrazone at 0.42; sulfometuron at 0.16, chlorsulfuron at 0.08, and diuron at 13.47; and a split application of sulfometuron at 0.10, chlorsulfuron at 0.05, sulfentrazone at 0.27, metsulfuron at 0.02, and diuron at 5.39. The second treatment of this split application included sulfometuron at 0.06, chlorsulfuron at 0.03, sulfentrazone at 0.15, metsulfuron at 0.01, and hexazinone at 0.84. Glyphosate at 1.68 kg ae/ha and 0.25% v/v non-ionic surfactant were included in all herbicide treatments. Treatments were applied using a CO2-powered hand held sprayer equipped with a single off-center tip targeting 374 L/ha on May 15 and May 27, 2009 at the Washington and Centre sites, respectively. The second treatment of the dual application was applied on July 10 or 20, 2009, at the two sites. Plots were evaluated for total cover approximately 0, 60, and 120 days after treatment (DAT) and for annual grass cover at 120 DAT. Predominant grass species at Washington included smooth brome (Bromus inermis Leyss.), reed canarygrass (Phalaris arundinacea L.), giant foxtail (Setaria faberi Herrm.), fall panicum (Panicum dichotomiflorum Michx.), orchardgrass (Dactylis glomerata L.) and barnyardgrass (Echinochloa crus-galli (L.) Beauv.). The Centre site was inhabited by the following grass species: giant foxtail, yellow foxtail (Setaria pumila (Poir.) Roemer & J.A. Schultes), smooth crabgrass (Digitaria ischaemum (Schreb.) Schreb. Ex Muhl.), large crabgrass (Digitaria sanguinalis (L.) Scop.), barnyardgrass, and orchardgrass. By September (120 DAT), untreated plots averaged 68 and 83 percent total vegetative cover and 2 and 12 percent annual grass cover at the Washington and Centre sites, respectively. Treatments ranged from 1 to 34 percent total and 0 to 14 percent annual grass cover at Washington. At Centre, treatments produced between 1 and 32 percent total and 0 and 8 percent annual grass cover. Treatments containing pendimathalin, imazapic, or rimsulfuron provided the poorest control, with differences most pronounced at the Washington site. There were no significant differences in annual grass cover at either site; however, the addition of oryzalin (either rate) and the split application tended to produce the best results." |
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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):
Johnson, J., K. Lloyd, and J. Sellmer. 2010. Suppression of annual grasses along highway guiderails. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 31. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=47
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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