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Web URL(s): | http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=55 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Watschke, T. L.;
Borger, J. A.;
Shearer, C. R.;
Heyl, C. |
Author Affiliation: | Professor and Research Assistants, respectively, Department of Agronomy, Penn State University |
Title: | Seedhead suppression of tall fescue and annual bluegrass |
Meeting Info.: | Williamsburg, VA; January 2-5, 1996 |
Source: | Proceedings of the 50th Annual Meeting of the Northeastern Weed Science Society. Vol. 50, 1996, p. 55. |
Publishing Information: | College Park, MD: Northeastern Weed Science Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Festuca arundinacea; Growth regulator evaluation; Poa annua; Seedhead inhibition
|
Abstract/Contents: | "Two studies were conducted in 1995 with the objective of evaluating growth regulators with their efficacy for seeded suppression. One of the studies was conducted as an evaluation of materials for their capability to suppress seedheads on low maintenance tall fescue (Festuca arundinacea L.) (roadside-type turf). The treatments in this study were applied on May1 1995, using a COd[2powered hand-held boom sprayer with 6504 nozzles at 30 psi calibrated to deliver 40 gpa. No seedheads were visible on the tall fescue at the time of application. The turf was not mowed throughout the course of study and no fertilizer or irrigation were provided. Seedhead suppression was rated on on June 19, 1995 (seven weeks after treatment). A commercial acceptance level for seedhead suppression was considered to be 75%. Melfluidide alone at 8.8 0zs. product/A, EH1094 at 5.4 and 6.5 ozs. product/A plus a combination of imazaquin and imazethapyr (Event) at 2.2 ozs. Product/A provided acceptable seedhead suppression. The advantage of the melfluidide plus Event would be the potential weed control that might be realized from the Event. The other study was conducted to assess melfluidide, the wetting agents Surfside 199 and 37, melfluidide plus Ferromec, and melfluidide plus 37 for seedhead suppression of annual bluegrass (Poa annua) on a golf course putting green. The wetting agents were also assessed for seedhead suppression when a sequential treatment was made at a 10 day interval. The study was initiated on April 20 1995, on a golf course green at the six hole Nittany Course on the campus of Penn State University. Materials were applied using a CO₂ powered hand-held boom sprayer with 8004 nozzles at 30 psi calibrated to deliver 80 gpa. Sequential treatments of selected wetting agents were made on May1, 1995. After 24 hours, the green was irrigated with approximatly 0.5 inches of water. Injury (discoloration) was rated on April 27 and May 26. On April 27, melfluidide alone at 4.4 ozs. Product/A and melfluidide at the same rate but combined with 37 to 218 ozs. Product/A caused unacceptable discoloration. Melfluidide at 4.4 ozs product/A plus Ferromec 218 ozs product/A and all wetting agents applications did not cause unacceptable injury. By the May 26 rating, the melfluidide and melfluidide plus 37 treated turf had enhanced quality (primarily darker green color) while all the other turf in the study was not different from the untreated check. Seedhead suppression was rated on May 8 and May 26. On May 8, melfluidide, melfluidide plus Ferromec, and melfluidide plus 37 had 95,95,and 90% seedhead suppression respectively. Seedhead suppression resulting from applications of wetting agents or combinations thereof varied from 33 to 77% with the combination of 199 and 37 at 218 and 131 ozs product/A respectively providing the most seedhead suppression. However, by May 26 no seedhead suppression was found for any wetting agent, combination thereof, or sequential application while melfluidide, melfluidide plus Ferromec, and melfluidide plus 37 all maintained a high level of seedhead suppression." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Watschke, T. L., J. A. Borger, C. R. Shearer, and C. Heyl. 1996. Seedhead suppression of tall fescue and annual bluegrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 50:p. 55. |
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| Web URL(s): http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=55 Last checked: 07/24/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 610 .N62 v. 50 |
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