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Web URL(s):https://archive.lib.msu.edu/tic/itgcs/article/1995feb16.pdf
    Last checked: 09/29/2008
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Publication Type:
i
Proceedings
Author(s):Burpee, Lee
Author Affiliation:University of Georgia, Griffin, GA
Title:Dollar spot management in fairways: PGR - Fungicide interactions
Meeting Info.:San Francisco, February 20-27, 1995
Source:Conference Proceedings: 66th International Golf Course Conference and Show. 1995, p. 16-17.
Publishing Information:Lawrence, KS: Golf Course Superintendents Association of America
# of Pages:2
Keywords:TIC Keywords: Dollar spot; Sclerotinia homoeocarpa; Chemical control; Fungicide resistance; Fungicides; Disease Control; Fungicide evaluation; Combination treatments; Growth regulators; Interactions; Flurprimidol; Trinexapac-ethyl; Chlorothalonil; Iprodione; Propiconazole; Thiophanate
Cultivar Names:Penncross
Abstract/Contents:"[I]n 1993, our lab began a study to determine how PGRs [plant growth regulators] and fungicides might interact to suppress dollar spot epidemics. Experiments were conducted on a 4-year-old stand of creeping bentgrass cv. Penncross mowed at a fairway height of 1/2 inch. The PGRs, Scotts TGR, Cutless and Primo, and the fungicides Daconil 2787, Chipco 26019, Banner and Cleary's 3336 were applied at label rates alone and in combination. In the combination plots, fungicides were applied 3-5 days after the PGRs. The turf was inoculated with Sclerotinia homeocarpa four hours after the fungicide applications, and the progress of dollar spot epidemics was monitored in the plots for approximately five weeks. In 1993, plots treated with Scotts TGR or Cutless exhibited significantly less dollar spot when compared to untreated plots or plots treated with Primo. Cutless was significantly more disease suppressive than TGR up to 15 days after application. Similar results were obtained in 1994, except that plots treated with Primo exhibited significantly less disease than untreated plots during the third week after application. In 1993, the PGRs had minimal effects on the efficacy of the fungicides applied to control dollar spot. In 1994 all three PGRs significantly enhanced the efficacy of Daconil 2787 and Chipco 26019. These results are encouraging because they suggest that PGRs and fungicides can be integrated as part of a dollar spot management program. However, some major concerns must be addressed before such a program is developed further. Cutless and TGR are triazole-based PGRs with active ingredients similar to those in the fungicides Banner, Bayleton, and Sentinel, and they are also closely related to Rubigan. The active ingredient in Primo is not related to these fungicides. Recently, dollar spot that is resistant to these fungicides has been found on golf courses in the U.S. Further research must be conducted to determine what role PGRs play in either enhancing or suppressing this resistant dollar spot."
Language:English
References:0
See Also:Other items relating to: DOLLAR
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Burpee, L. 1995. Dollar spot management in fairways: PGR - Fungicide interactions. p. 16-17. In Conference Proceedings: 66th International Golf Course Conference and Show. San Francisco, February 20-27, 1995. Lawrence, KS: Golf Course Superintendents Association of America.
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https://archive.lib.msu.edu/tic/itgcs/article/1995feb16.pdf
    Last checked: 09/29/2008
    Requires: PDF Reader
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