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| Web URL(s): | https://archive.lib.msu.edu/tic/gcman/article/2006may97.pdf
Last checked: 09/30/2008
Requires: PDF Reader |
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Professional |
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| Author(s): | Wong, Frank |
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| Author Affiliation: | Cooperative Extension Specialist and Plant Pathologist, Department of Plant Pathology, University of California-Riverside |
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| Title: | Gray leaf spot in the west |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Golf Course Management. Vol. 74, No. 5, May 2006, p. 97-101. |
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| Publishing Information: | Lawrence, KS: Golf Course Superintendents Association of America |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Lolium perenne; Pennisetum clandestinum; Gray leaf spot; Disease profile; Pyricularia grisea; Disease identification; Fungicide resistance; Disease control
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| Geographic Terms: | California; Nevada |
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| Abstract/Contents: | Discusses the emergence of gray leaf spot, caused by Pyricularia grisea, in California and Nevada in 2003. Describes the origins of gray leaf spot in on the West Coast stating that "gray leaf spot was first seen in California in 1972." Cites thunderstorms in the Sierra Nevada foothills in 2003 and air temperatures near 90° F as the cause of gray leaf spot on "newly established perennial ryegrass approaches" in Meadow Vista, California. Also discusses the spread of the pathogen in 2004 and 2005 on the West Coast and the spread on the East Coast which started in 1991. Provides results of research that has already been completed and also discusses future research projects designed to combat gray leaf spot. States that "gray leaf spot on perennail ryegrass appears to have become established in California and likely other parts of the western United States with outbreaks in 2003, 2004 and 2005 since its initial discovery on turfgrass in Califonia in 1999. Frequent and preventive fungicide applications are recommended for its control, starting approximately in the first week of July and lasting until September or October. We have already seen the development of some QoI resistance, although performace at other locations appears to be acceptable. For resistance management, superintendents need to rotate the chemical classes used and tank-mix systemics with contact fungicides. Much work still remains. Determining the origin of the pathogen remains a top priority, and future research should help answer this question." |
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| Language: | English |
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| References: | 11 |
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| Note: | Includes sidebar, "The research says...", p. 101
Pictures, color
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wong, F. 2006. Gray leaf spot in the west. Golf Course Manage. 74(5):p. 97-101. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/gcman/article/2006may97.pdf
Last checked: 09/30/2008
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 G5 |
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