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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Giesler, L. J.;
Yuen, G. Y.;
Craig, M. L. |
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| Author Affiliation: | Department of Plant Pathology, University of Nebraska, Lincoln |
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| Title: | Evaluation of fungal antagonists against Rhizoctonia solani in tall fescue, 1992 |
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| Source: | Biological and Cultural Tests for Control of Plant. Vol. 8, 1993, p. 123. |
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| Publishing Information: | St. Paul, MN: The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Brown patch; Rhizoctonia solani; Disease evaluation
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| Abstract/Contents: | "Binucleate Rhizoctonia sp. CAG-B(o) (BN-1), provided by L. J. Herr, Ohio State University, Gliocladium virens (GL-21), provided by Grace-Sierra Crop Protection Co., Milpitas, CA and a Gliocladium sp. (TrBG), isolated from creeping bentgrass in Nebraska, were evaluated for control of brown patch disease. The experiment was performed on a 'Rebel' tall fescue turf at the University of Nebraska John Seaton Anderson Turfgrass Research Facility, Mead, NE. The turf was fertilized monthly from May through Sep with 0.6 lb actual N per 1000 sq ft and maintained at 2.5 in height. Throughout the experiment, the plots were irrigated nightly with approximately 1.5 in of water per week to maintain high leaf moisture. On 25 Jun, the first application of each treatment was applied. BN-1 was applied in colonized millet seed and TrBG in alginate-bran prill form. GL-21 was applied as alginate prill formulated by the manufacturer and as dispersable granules formulated by the manufacturer which were suspended in water. The liquid treatments were applied using a sprinkling can. On 27 Jul and 21 Aug repeat applications were made. On 1 Jul, R. solani grown on sterilized oat seed was used as inoculum on all plots at a rate of 8 lb per 1000 sq ft. This was repeated on 10 Aug at 7 lb per 1000 sq ft. There were four 5 ft by 5 ft replicate plots per treatment and a randomized block design was used. The plots were rated for brown patch severity every 2 wks through Sep using one of two methods. One was a visual assessment of percentage of turf exhibiting blight. When disease levels were low, i.e. less than 20% blight in the control plots, the extent of brown patch lesion development within the canopy was rated within 1 sq ft areas on a 0 to 10 scale (0 = no lesions, 10 = most severe). Three measurements were made per plot and averaged prior to statistical analysis. The disease did not develop to expected levels during much of the season due to abnormally low temperatures. Blight severity over entire plots could be assessed only on 5 Aug and 21 Aug when disease severity was at its peak." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Giesler, L. J., G. Y. Yuen, and M. L. Craig. 1993. Evaluation of fungal antagonists against Rhizoctonia solani in tall fescue, 1992. Biol. Cult. Tests Control Plant Dis. 8:p. 123. |
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