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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1991Articles/Phyto81n11_1438.pdf
Last checked: 10/15/2015
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Goodman, D. M.;
Burpee, L. L. |
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| Author Affiliation: | Goodman: Former Graduate Student, Department of Environmental Biology, University of Guelph, Canada; and Burpee Associate Professor, Department of Plant Pathology, University of Georgia, Georgia Station, Georgia |
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| Title: | Biological control of dollar spot disease of Creeping Bentgrass |
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| Source: | Phytopathology. Vol. 81, No. 11, November 1991, p. 1438-1446. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Dollar spot; Agrostis stolonifera; Sclerotinia homoeocarpa; Topdressings; Biological control
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| Abstract/Contents: | "Top-dressing creeping bentgrass with sand-cornmeal or chopped grain colonized by fungi or bacteria was tested as a means of suppressing the intensity of epidemics of dollar spot disease incited by Sclerotinia homoeocarpa. In a greenhouse, 45- to 90-day-old turfgrass grown in cups was top-dressed with 1,500 cm3/m2 of sand-cornmeal infested by a mycelium so S. homoeocarpa by an equal amount of sand-cornmeal infested by potential antagonists. Four of 24 potential antagonists inhibited the growth of S. homoeocarpa and suppressed disease by 25-90%. In 1987, plots on a closely mown sward of creeping bentgrass were treated with inoculum of S. homoeocarpa and top-dressed weekly with sand-cornmeal (400 cm3/m2) infested by isolates of potential antagonists. Maximum disease intensities (percentage of plot area blighted) were 5, 18, or 44% in plots treated with sand-cornmeal infested by Fusarium heterosporum, an Acremonium sp., or an unidentified bacterium, respectively, during a 35-day epidemic, compared to 84% in plots not top-dressed and 64% in plots top-dressed with noninfested, autoclaved sand-cornmeal. In another experiment, maximum disease intensities were 31% in plots not top-dressed; 9% in plots top-dressed with noninfested, autoclaved chopped grain; or 3-6% in plots top-dressed with chopped grain infested by potential antagonists. In 1988, treatments at 2-wk intervals with sand-cornmeal infested by F. heterosporum (isolate pa 7) at 400 cm3/m2 limited disease intensity of a 78-day epidemic of dollar spot to 3%, compared to 18% in nontreated plots. Sterilization of sand-cornmeal infested by F. heterosporum (isolate pa 7) by heating to 70 C for 1 h did not significantly (P = 0.10) reduce efficacy. Results of laboratory and greenhouse experiments suggest that F. heterosporum (isolate pa 7) produces substances toxic to S. homoeocarpa." |
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| Language: | English |
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| References: | 40 |
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| See Also: | Other items relating to: DOLLAR |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Goodman, D. M., and L. L. Burpee. 1991. Biological control of dollar spot disease of Creeping Bentgrass. Phytopathology. 81(11):p. 1438-1446. |
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| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1991Articles/Phyto81n11_1438.pdf
Last checked: 10/15/2015
Requires: PDF Reader |
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MSU catalog number: SB 599 .P48 |
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