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| Web URL(s): | http://newss.org/proceedings/proceedings_2009.pdf#page=100
Last checked: 07/17/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Elmore, M. T.;
Naedel, M. B.;
Loughner, D. L. |
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| Author Affiliation: | Elmore, Borger and Naedel: Pennsylvania State University, University Park; Loughner: Dow AgroSciences, Huntingdon Valley, PA |
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| Title: | Preemergence smooth crabgrass control with fall applications |
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| Section: | Turfgrass and plant grown regulators
Other records with the "Turfgrass and plant grown regulators" Section
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| Meeting Info.: | Baltimore, Maryland: January 6-8, 2009 |
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| Source: | Proceedings of the Sixty-Third Annual Meeting of the Northeastern Weed Science Society. Vol. 63, 2009, p. 85. |
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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; Dithiopyr; Poa pratensis; Preemergence weed control; Prodiamine
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| Cultivar Names: | Midnight |
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| Trade Names: | Dimension; Barricade |
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| Abstract/Contents: | "Preemeergence control of [Digitaria ischaemum (Schreb.) Schreb. ex Muhl.] was evaluated on a mature stand of 'Midnight' Kentucky bluegrass (Poa pratensis) in two studies, one conducted in 2005 and one in 2007. Both studies were conducted at the Valentine Turfgrass Research Center, Pennsylvania State University, University Park, PA. The objectives of the studies were to determine the efficacy of selected preemergence herbicides for the control of smooth crabgrass when applied in the fall to normal application timing and the rates of materials. Both studies were a randomized complete block design with three replications. Granular treatments were applied on October 18, 2005 and November 8, 2007 (early fall), November 22, 2005 and November 29, 2007 (late fall), and April 17, 2008 (spring) using a shaker box. Liquid treatments were applied with a CO2 powered single nozzle boom-type sprayer using an 11004E flat fan nozzle at 40 PSI calibrated to deliver 40 gal/A. The sites were mowed once per week with a rotary mower at one inch with clippings returned to the site. The test sites were overseeded with a native source of smooth crabgrass seed in the fall of at least two of the previous growing seasons. The test sites had approximately 95% cover of smooth crabgrass in the non treated areas at the conclusion of the studies. Smooth crabgrass germination was first noted in the non treated areas of the test sites on April 25, 2005 and May 1, 2007. The percent control of smooth crabgrass was evaluated on August 15th and 20th in 2005 and 2007, respectively. In both 2005 and 2007 all treated turfgrass had significantly less crabgrass than non treated turfgrass. In 2005, turfgrass treated with Dimension® 0.21G (dithiopyr) at 0.5 lb ai/A in either early or late fall contained significantly less crabgrass than turfgrass treated with Barricade® 0.43G (prodiamine) at 0.75 lb ai/A in either early fall or late fall. In 2007, similar results were observed as turfgrass treated with Dimension® 0.103G at 0.5 lb ai/A in either early or late fall contained significantly less crabgrass than turfgrass treated with Barricade® 0.21G at 0.65 lb ai/A in early or late fall. However, in 2005, turfgrass treated with Dimension® 40WP at 0.5 lb ai/A in either early or late fall was compared to turfgrass treated with Barricade® 65WG at 0.75 lb ai/A in early or late fall, no significant differences in crabgrass control were observed. Results were similar in 2007, when crabgrass populations in turfgrass treated in late fall with Dimension® 40WP at 0.5 lb ai/A and Barricade® 65WG at 0.75 lb ai/A did not differ significantly. When evaluating lower rates in 2005, treatments with Dimension® 0.21G at 0.38 lb ai/A applied in early fall or late fall contained significantly less crabgrass than turfgrass treated with Barricade® 0.43G at 0.5 lb ai/A in early or late fall. In 2007, similar results were observed as turfgrass treated with Dimension® 0.103G at 0.38 lb ai/A in early or late fall contained significantly less crabgrass than turfgrass treated with Barricade® 0.21G at 0.5 lb ai/A. Finally, crabgrass control in turfgrass treated in 2007 with Dimension® 0.103G at 0.5 lb ai/A applied in early fall and DimensionDRG 0.103G at 0.38 lb ai/A applied in spring were not significantly different." |
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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):
Elmore, M. T., M. B. Naedel, and D. L. Loughner. 2009. Preemergence smooth crabgrass control with fall applications. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 63:p. 85. |
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| Web URL(s):
http://newss.org/proceedings/proceedings_2009.pdf#page=100
Last checked: 07/17/2013
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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