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| DOI: | 10.1094/PHYTO-103-9-S3.1 |
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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-103-9-S3.1
Last checked: 08/26/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Amaradasa, B.;
Amundsen, K. |
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| Author Affiliation: | University of Nebraska-Lincoln, Lincoln, Nebraska |
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| Title: | Evaluation of fungicides to effectively control the buffalograss false smut causal pathogen |
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| Section: | 2013 North Central Division meeting abstracts
Other records with the "2013 North Central Division meeting abstracts" Section
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| Meeting Info.: | Manhattan, Kansas: June 12-14, 2013 |
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| Source: | Phytopathology. Vol. 103, No. 9S, September 2013, p. S3.1-S3.2. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Azoxystrobin; Boscalid; Bouteloua dactyloides; Cercospora seminalis; Chemical sensitivity; Fungicide evaluation; Iprodione; Propiconazole; Pyraclostrobin; Thiophanate-methyl
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| Abstract/Contents: | "False smut caused by Cercospora seminalis is an important disease of turf-type buffalograss (Buchloe dactyloides) seed production. The disease prevents normal caryopsis development and causes considerable yield loss and reduced seed germination. Since there are no labeled fungicides for false smut, we studied in vitro sensitivity of C. seminalis to six commonly used turfgrass fungicides, namely thiophanate-methyl, boscalid, iprodione, propiconazole, azoxystrobin and pyraclostrobin. Growth inhibition of one fast growing and one slow growing isolate of the pathogen was monitored on petri plates amended with four concentrations (0.1, 1, 10 and 100 mg a.i./liter) of each commercial formulation of fungicide with three replications. The experiment was repeated and data were pooled for the analysis. Both isolates of C. seminalis were not sensitive to thiophanate-methyl. The other fungicides except for azoxystrobin had high activity against C. seminalis with EC50 varying from 0.02 to 0.17 mg a.i./liter. The azoxystrobin had a moderate EC50 value of 1.2 mg a.i./liter. A field study conducted to evaluate timing effect of application of azoxystrobin (i.e. before flowering, early flowering, late flowering and when disease symptoms are visible) did not give any significant results which were consistent with our in vitro results. Additional field tests for other fungicides are needed to determine if in vitro results are repeatable under field conditions." |
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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):
Amaradasa, B., and K. Amundsen. 2013. Evaluation of fungicides to effectively control the buffalograss false smut causal pathogen. Phytopathology. 103(9S):p. S3.1-S3.2. |
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| DOI: 10.1094/PHYTO-103-9-S3.1 |
| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-103-9-S3.1
Last checked: 08/26/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2219736a |
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Digitally in TIC by file name: phytp2013sepnorthcentraldiv |
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