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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=134
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. L.;
Borger, J. A.;
Brosna [Brosnan], J. T. |
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| Author Affiliation: | Penn State University, University Park, PA |
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| Title: | Seedhead suppression of annual bluegrass in 2001 |
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| Meeting Info.: | Loews Hotel, Philadelphia, PA: January 7, 8, 9, and 10, 2002 |
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| Source: | Proceedings of the 56th Annual Meeting of the NortheasternWeed Science Society. Vol. 56, 2002, p. 134-135. |
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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: Seedhead inhibition; Poa annua; Agrostis stolonifera; Growth regulators; Lolium perenne; Herbicides
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| Trade Names: | Embark T/O; Ferromec; MacroSorb Foliar; MacroSorb Foliar plus |
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| Abstract/Contents: | "The first study was conducted on a mixed stand of creeping bentgrass (Agrostis stolonifera) and Poa annua at the Penn State Blue Golf Course in State College, PA. The objective of the study was to evaluate selected growth regulators, with and without additional adjuvants and different timings, for the seedhead suppression of Poa annua under putting green conditions. Treatments were applied on April 10, 2001 (2 weeks prior to boot stage), April 16, 2001 (1 week prior to boot stage), April 23, 2001 (boot stage), and in some cases sequential applications were made on April 30, May 7, and May 15, 2001using [2001 using] a three-foot CO2 powered boom sprayer calibrated to deliver 40 GPA using two 6504 flat fan nozzles at 40 psi. The turf was maintained using cultural practices for irrigation, mowing, and fertilization that would be typical for a green. The green did not receive any aerification/topdressing prior to or during the study. In the first study (putting green), treatments that provided 90% or greater seedhead suppression two weeks after application at the boot stage were: Embark T/O at 40 oz/A plus 5 oz/M Ferromec, Embark T/O at 35 oz/A plus 4 oz/M MacroSorb Foliar, Embark T/O at 35 oz/A plus 4 oz/M MacroSorb Foliar plus 5 oz/M Ferromec, and Embark T/O at 40 oz/A plus 5 oz/M Ferromec followed three weeks later with 20 oz/A Embark T/O plus 4 oz/M MacroSorb Foliar, Proxy applied at the boot stage at 5 oz/M provided 85% suppression. Proxy at 5 oz/M was applied two and one week prior to boot stage resulting in 90 and 87% suppression respectully. Seedhead suppression rated three weeks after application revealed that all Proxy treatments did not persist as the best treatment resulted in 37% suppression. All the other previously mentioned treatments had at least 88% suppresion except Embark T/O at 35 oz/A plus 5 oz/M Ferromec which only had 68% suppresion after three weeks. With respect to quality ratings, all treated turf had acceptable quality. The addition of MacroSorb Foliar allowed for a decrease in Embark T/O rate from 40 to 36 oz/A without loss of seedhead suppression. The second study was conducted on a mixed stand of perennial ryegrass, Kentucky bluegrass and Poa annua at the Penn State Blue Golf Course in State College, Pa. The objective of the study was to evaluate selected growth regulators, with and without additional adjuvants and different timings, for the seedhead suppression of Poa annua under fairway conditions. Treatments were applied on April 10, 2001 (2 weeks prior to boot stage), April 16, 2001 (1 week prior to boot stage), April 23, 2001 (boot stage), and, in some cases sequential applications were made on, April 30 and May 7, 2001using [2001 using] a three-foot CO2 powered boom sprayer calibrated to deliver 40 GPA using two 6504 flat fan nozzles at 40 psi. The turf was maintained using cultural practices for irrigation, mowing, and fertilization that would be typical for a fairway. In the second study (fairway), treatments that provided 90% or more seedhead suppression when applied at the boot stage of development were; Embark T/O at 80 oz/A, Embark T/O at 60 oz/A plus MacroSorb Foliar at 4 oz/M, and Embart T/O at 80 oz/A plus MacroSorb Foliar at 4 oz/M. Turf treated with Embark T/O at 40 oz/A plus MacroSorb Foliar at 4 oz/M provided 82% seedhead suppression. Turf treated with Embark at 40 or 60 oz/A provided 88% seedhead suppression. Proxy treated turf regardless or rate, provided no more than 57% seedhead suppression. It appears that the addition of MacroSorb Foliar to the application of Embark T/O enhanced seedhead suppression." |
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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. L., J. A. Borger, and J. T. Brosnan. 2002. Seedhead suppression of annual bluegrass in 2001. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 134-135. |
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| Choices for finding the above item: |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=134
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. 53 |
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