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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2005.pdf#page=98
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): | Borger, J. A.;
Watschke, T. L. |
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| Author Affiliation: | Penn State University, University Park,PA |
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| Title: | Annual bluegrass control and more |
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| Section: | Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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| Meeting Info.: | Capital Hilton, Washington, D.C.: January 3-6, 2005 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 59, 2005, p. 84. |
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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: Poa annua; Poa annua control; Agrostis stolonifera; Growth regulators; Fungicides; Fertilizers; Biostimulants; Dollar spot; Evaluations
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| Abstract/Contents: | "This study was conducted on a mature stand of creeping bentgrass (Agrostis stolonifera) and annual bluegrass (Poa annua) at the Valentine Turfgrass Research Center, Penn State University, University Park, Pa. The objective of the study was to determine the efficacy of plant growth regulators, fungicides, fertilizer, and biostimulants alone, or in combination, to reduce annual bluegrass and suppress dollar spot (Sclerotinia homeocarpa). This study was a randomized complete block design with three replications. Treatments were applied on June 2, June 9, June 14, June 21, June 30, July 7, July 15, September 7, and October 5, 2004 using a three foot CO2 powered boom sprayer calibrated to deliver 40 gpa using two, flat fan, 11004 nozzles at 40 psi. There was no visual evidence of dollar spot infection present in the test site at the time of the June 2 application. The test site was maintained similar to that of a golf course fairway with respect to irrigation, fertilization and mowing. Dollar spot was rated weekly starting on June 7, 2004 and concluding on August 3, 2004 (seven rating dates). Dollar spot infection steadily increased to 35 percent coverage in the untreated turfgrass until the August 3 rating date. Treated turfgrass varied with respect to the level of dollar spot occurrence. Turfgrass treated with any rate ot Trimmit 2SC and Rubigan 1AS alone or in combination with an 18-3-4 fertilizer or MacroSorb Foliar had significantly lower percent dollar spot occurrence on the August 3 rating date. Turfgrass that was not different from the untreated was treated with: Velocity 80WP at 60 g ai/A applied once in June, Velocity 80WP at 60 g ai/A plus Aquathol K 4.23L at 0.2 lb ai/M applied once in June, Velocity 80WP at 45 g ai/A plus MacroSorb Foliar at 2 oz/M applied once in June, Velocity 80WP at 60 g ai/A plus 18-3-4 fertilizer at 0.2 lb N/M applied once in June, and Velocity 80WP at 60 g ai/A plus MacroSorb Foliar at 2 oz/M applied once in June. Preliminary results (data collected on September 29, 2004) for annual bluegrass reduction revealed that ten treatments that had significantly less annual bluegrass than untreated turfgrass. These treatments included: Velocity 80WP at 30 g ai/A applied twice in June, Velocity 80WP at 10 ai/A applied six times, weekly starting in June, Velocity 80WP at 60 g ai/A applied twice in June, Trimmit 2SC at 0.66 lb ai/A alone or combined with an 18 - 3 - 4 fertilizer at 0.2 lb N/M applied in June and September, Trimmit 2SC at 0.66 lb ai/A or at 0.4 lb ai/A applied in June and September combined with applications of Rubigan 1AS at 0.75 oz/M applied in twice in June, once in July, and September, Trimmit 2SC at 0.4 lb ai/A applied twice in June, once in July and September alone or combined with an 18-3-4 fertilizer at 0.02 lb N/M, and Trimmit 2SC at 0.4 lb ai/A applied twice in June, once in July and September combined with an 18-3-4 fertilizer at 0.02 lb N/M and Rubigan 1AS at 0.75 oz/M." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: Biostimulants |
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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):
Borger, J. A., and T. L. Watschke. 2005. Annual bluegrass control and more. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 59:p. 84. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2005.pdf#page=98
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. 57 |
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