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Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1994Articles/phyto84n10_1061.pdf#page=53 Last checked: 10/16/2015 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Giesler, L. J.;
Yuen, G. Y. |
Author Affiliation: | Department of Plant Pathology, University of Nebraska-Lincoln |
Title: | A non-fluorescent Pseudomonas sp. antagonistic to brown patch |
Meeting Info.: | 1994 APS Annual Meeting, August 6-10, 1994, Albuquerque, New Mexico |
Source: | Phytopathology. Vol. 84, No. 10, October 1994, p. 1113. |
Publishing Information: | St. Paul, MN: American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Pseudomonas; Brown patch; Rhizoctonia solani; Antagonism; Bacteria; Festuca arundinacea; Disease evaluation; Biological control
|
Cultivar Names: | Fawn; Eldorado; Emperor |
Abstract/Contents: | "Bacterial antagonists effective against brown patch disease caused by Rhizoctonia solani have not been reported previously. We identified a non-fluorescent Pseudomonas sp. (C3) as a potential bacterial antagonist of R. solani for use in turfgrass. In two bioassays, one involving grass blades in petri dishes and the other involving seedlings in a growth chamber, C3 exhibited the highest level of antagonism to R. solani out of 160 bacterial isolates. In a 1-yr.-old sward of tall fescue 'Fawn', C3 consistently reduced brown patch lesion development (P=0.05). In 2-yr.-old swards of tall fescue 'Fawn', 'El Dorado', and 'Emperor', C3 consistently inhibited R. solani in 'El Dorado' (P=0.05), but did not suppress disease in 'Emperor' or 'Fawn'. Disease ratings in 'El Dorado' C3-treated plots ranged from 2.8 to 4.7 on a 0-10 scale as compared to ratings of 3.8 to 5.2 in R. solani inoculated control plots. C3 maintained stable foliage populations of 6 log cfu/g tissue throughout field experiments; however, on grass blades in the laboratory, 9 log cfu/g was needed for antagonism, thus explaining the low level of field efficacy. Results show the need for a screening system which identifies bacterial antagonist effective at field levels." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Giesler, L. J., and G. Y. Yuen. 1994. A non-fluorescent Pseudomonas sp. antagonistic to brown patch. Phytopathology. 84(10):p. 1113. |
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| Web URL(s): http://www.apsnet.org/publications/phytopathology/backissues/Documents/1994Articles/phyto84n10_1061.pdf#page=53 Last checked: 10/16/2015 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 599 .P48 |
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