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| DOI: | 10.21273/HORTSCI.31.3.389 |
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| Web URL(s): | https://journals.ashs.org/hortsci/view/journals/hortsci/31/3/article-p389.xml
Last checked: 11/13/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Fidanza, Michael A.;
Dernoeden, Peter H. |
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| Author Affiliation: | Department of Agronomy, University of Maryland, College Park, MD 20742-5821 |
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| Title: | Interaction of nitrogen source, application timing, and fungicide on Rhizoctonia blight in ryegrass |
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| Source: | HortScience. Vol. 31, No. 3, June 1996, p. 389-392. |
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| Publishing Information: | Alexandria, VA: American Society for Horticultural Science |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Nitrogen; Application timing; Fungicides; Brown patch; Lolium; Rhizoctonia solani; Urea; Carbohydrates; Soil pH; Cool season turfgrasses; Root and Foliage diseases; Turfgrass quality; Disease control
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| Cultivar Names: | Caravelle |
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| Abstract/Contents: | "Rhizoctonia blight (RB), incited by Rhizoctonia solani K"uhn, is a common disease of cool-season turfgrasses. This 2-year field study was conducted to determine the influence of N source, N application timing, and fungicide treatment on RB severity in 'Caravelle' perennial ryegrass (Lolium perenne L.). Ringer Lawn Restore (Ringer), a slow-relaese N source, was compared to water-soluble urea. Nitrogen was applied according to either spring (March, May, June, and September) or fall (September, October, November, and May) schedule. Plots received either N only or N plus the fungicide iprodione (3.1 kg a.i./ha applied at 21-day intervals). RB was reduced with fall-applied Ringer compared to spring-applied urea in both years in fungicide-free plots. Nitrogen generally enhanced foliar mycelium growth and RB during the initial infection periods(i.e., late June to late July). By mid- to late August there were extremely high levels of blighting among all fungicide-free treatments. Nitrogen source and N application time had no effect on the level of blighting in iprodione-treated plots. During early disease outbreaks, iprodione did not always prevent foliar mycelium from appearing, but it did protect turf from severe RB. Iprodione reduced blighting, but the level of disease suppression and resulting turfgrass quality provided on the extended spray interval was not acceptable for high-quality golf course fairways." |
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| Language: | English |
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| References: | 32 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fidanza, M. A., and P. H. Dernoeden. 1996. Interaction of nitrogen source, application timing, and fungicide on Rhizoctonia blight in ryegrass. HortScience. 31(3):p. 389-392. |
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| DOI: 10.21273/HORTSCI.31.3.389 |
| Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/31/3/article-p389.xml
Last checked: 11/13/2019
Requires: PDF Reader |
| 
MSU catalog number: SB 1 .H64 |
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