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| Web URL(s): | https://listings.lib.msu.edu/nwtgc/1989.pdf#page=32
Last checked: 01/16/2017
Requires: PDF Reader |
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| Publication Type:
| Proceedings |
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| Author(s): | Chastagner, Gary;
Brauen, Stan;
Riley, Kathy;
McQuarrie-Baker, Valerie;
Staley, John;
Johnson, William;
Evans, Dave |
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| Author Affiliation: | Washington State University |
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| Title: | 1989 necrotic ring spot fungicidal control and Kentucky bluegrass susceptibility test results: Susceptibility of bluegrasses to NRS |
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| Meeting Info.: | September 18-21, 1989 |
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| Source: | Proceedings of the 43rd Northwest Turfgrass Conference. Vol. 43, 1989, p. 25-31. |
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| Publishing Information: | Spokane, WA: Northwest Turfgrass Association |
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| Keywords: | TIC Keywords: Necrotic ring spot; Variety trials; Poa pratensis
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| Abstract/Contents: | "Necrotic ring spot (NRS) is a serious disease problem on bluegrass turf in the Pacific Northwest. This disease is caused by the soil-borne fungus Leptosphaeria korrae, which causes patch symptoms from late spring through fall." A study was undertaken to determine the susceptibility of bluegrasses to NRS. In 1987, at two sites Puyallup and Prosser, 72 bluegrass cultivars were inoculated with three isolates of L. korrae. Inoculum of each L. korrae isolate was placed at a measured location within each plot. A 1-inch core of turf was removed and inoculum, consisting of 1 gm of air-dried millet seed that had been colonized by the fungus, was deposited just below the thatch layer prior to replacing the turf plug. At Prosser in 1988, no disease symptoms developed. At Puyallup in 1988, some patch symptoms occurred, but weedy grasses that had invaded the test plots prevented assessment of disease. In 1989, data was collected at both sites. At the Puyallup, the largest patches (12 inches) occurred on Amazon, while no symptoms developed on Julia, Eclipse, Merion, Classic, Mystic, and P-104. Because of the limited number of inoculation sites from which data could be obtained, there were no statistical differences between the sizes of patches on any of the cultivars in this test. At Prosser, the largest patches (3.3 to 1.9 inches) developed on HV-97, Julia, Conni and BAR VB 534. This data was statistically significant. More research is needed. |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chastagner, G., S. Brauen, K. Riley, V. McQuarrie-Baker, J. Staley, W. Johnson, et al. 1989. 1989 necrotic ring spot fungicidal control and Kentucky bluegrass susceptibility test results: Susceptibility of bluegrasses to NRS. p. 25-31. In Proceedings of the 43rd Northwest Turfgrass Conference. September 18-21, 1989. Spokane, WA: Northwest Turfgrass Association. |
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| Web URL(s):
https://listings.lib.msu.edu/nwtgc/1989.pdf#page=32
Last checked: 01/16/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .N6 no.43 |
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