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| Publication Type:
| Newsletter |
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| Author(s): | Vincelli, Paul |
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| Author Affiliation: | Turfgrass Pathologist, University of Kentucky, Lexington, Kentucky |
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| Title: | [Fungicide resistance and dollar spot] |
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| Section: | Professorial insight
Other records with the "Professorial insight" Section
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| Source: | TurfNet Monthly. Vol. 13, No. 9, September 2006, p. 6, 13. |
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| Publishing Information: | Orlando, FL: Turnstile Publishing Co. |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: DMI fungicides; Fungicide resistance; Dollar spot; Fungicides
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| Abstract/Contents: | Discusses potential causes of dollar spot fungus (Sclerotinia homoecarpa) resistance to fungicides containing Thiophanate-methyl. States that "once resistant strains develop, they are as vigorous and well-adapted to causing disease as sensitive strains. Thus, the resistance tends to persist indefinitely on the site." Lists fungicides tested in a study conducted to survey "55 golf courses for resistance to fungicides in the dollar spot fungus", including Propiconazole and Iprodione. Reports that "it should be noted that some strains of S. homoeocarpa exhibited resistance to more than one fungicide." Also discusses management implications of fungicide resistance, stating that "resistance to thiophanate-methyl seems rather common...and the fungicide is ineffective where the resistance occurs. If superintendents see a breakdown of dollar spot control when using this fungicide, it is probably a wise idea to cut that active ingredient out of one's dollar spot spray program." Mentions the use of DMI [dicarboximides]." Concludes that "resistance to dicarboximides seemst to present almost no practical significance at this stage. Resistant strains are infrequent...[and] the less one uses a fungicide with a risk for resistance, the longer it is likely to take for resistant strains to develop." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also dicussed article, "Fungicide sensitivity of Sclerotinia homoeocarpa from golf courses in Ohio" Plant Disease, 90(6), June 2006, p. 807-813 R=118864 R=118864 |
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| Note: | Pictures, b/w |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vincelli, P. 2006. [Fungicide resistance and dollar spot]. TurfNet Mon. 13(9):p. 6, 13. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=118795 |
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MSU catalog number: SB 433.34 .U6 T874 |
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