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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=118
Last checked: 07/23/2013
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): | Watschke, T.;
Borger, J. |
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| Author Affiliation: | Penn State University, University Park, Pennsylvania |
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| Title: | Smooth crabgrass control (pre- and postemergence) in 2003 |
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| Section: | Turfgrass and plant growth regulators section
Other records with the "Turfgrass and plant growth regulators section" Section
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| Meeting Info.: | Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 118. |
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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: Crabgrass control; Digitaria ischaemum; Herbicide efficacy; Herbicide evaluation; Poa pratensis; Postemergence weed control; Preemergence weed control
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| Cultivar Names: | Midnight |
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| Abstract/Contents: | "Preemergence control of smooth crabgrass (Digitaria ischaemum) was evaluated on a mature stand of `Midnight' Kentucky bluegrass (Poa pratensis), at the Valentine Turfgrass Research Center, Penn State University, University Park, PA. The objective of the study was to determine the efficacy of selected preemergence herbicides for the control of smooth crabgrass. This study was a randomized complete block design with three replications. Treatments were applied on April 29, 2003 (PRE) and some treatments were applied June 10, 2003 (6WAT) using a three foot CO2 powered boom sprayer calibrated to deliver 80 GPA using two, flat fan, 11004 nozzles at 40 PSI. After application the entire test site received approximately 0.5 inch of water. On May 20, 2003, 0.5 lb N/M was applied from urea and 0.5 lb N/M from a 31-0-0 IBDU fertilizer was applied to the test site. The site was mowed two times per week with a rotary mower at one inch with clippings returned to the site. Smooth crabgrass germination was first noted in the test site on May 1, 2003. Control was rated on August 5, 2003. No phytotoxicity was noted from the application of any of the treatments. Acceptable control (85% or above) was determined for the following treatments; Dimension Ultra 40WP at 0.25 lbs ai/A followed by another 0.25 lbs ai/A six weeks later, Dimension Ultra 40WP at 0.5 lbs ai/A, Pendulum 3.8CS at 1.5 lbs ai/A followed by another 1.5 lbs ai/A six weeks later, Barricade 65WDG at 0.325 lbs ai/A followed by another 0.325 lbs ai/A six weeks later, Barricade 65WDG at 0.65 lbs ai/A, Barricade 4FL at 0.325 lbs ai/A followed by another 0.325 lbs ai/A six weeks later, and Barricade 65WDG and 4FL at 0.5 lbs ai/A followed six weeks later with 0.25 lbs ai/A. In a second study, postemergence smooth crabgrass control evaluations were conducted on a mature stand of Midnight Kentucky bluegrass at the Valentine Turfgrass Research Center, Penn State University, University Park, PA. The objective of the study was to determine the efficacy of selected postemergence herbicides for the control of smooth crabgrass. This study was a randomized complete block design with three replications. Treatments were applied on July 25, 2003 using a three foot CO2 powered boom sprayer calibrated to deliver 40 GPA using two, flat fan, 11004 nozzles at 40 PSI. The test site was maintained at 1.0 inch with a rotary mower that returned clippings to the site. Irrigation was provided on an as needed basis. None of the treatments provided acceptable (>85%) control of smooth crabgrass. However, Acclaim Extra 0.57EW at 20 oz/A plus MacroSorb Foliar at 2 oz/M came close with a rating of 82% control. The same rate of Acclaim Extra alone, only provided 68% control, therefore the activity of Acclaim Extra appeared to be enhanced due to the addition of the MacroSorb Foliar, particularly when the smooth crabgrass was in a more mature growth stage." |
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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):
Watschke, T., and J. Borger. 2004. Smooth crabgrass control (pre- and postemergence) in 2003. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 118. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=118
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 57 |
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