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| Web URL(s): | https://archive.lib.msu.edu/tic/bulls/article/2007jan13.pdf
Last checked: 09/30/2008
Requires: PDF Reader |
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| Publication Type:
| Newsletter |
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| Author(s): | Settle, Derek |
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| Author Affiliation: | Chicago District Golf Association |
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| Title: | Past and present: Dollar spot research from Kansas State to Chicago: A disease resistant bentgrass cultivar allows flexibility to control dollar spot |
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| Source: | On Course. Vol. 60, No. 8, January 2007, p. 13-18. |
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| Publishing Information: | [Carpentersville, IL]: Midwest Association of Golf Course Superintendents |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Disease profile; Disease identification; Dollar spot; Agrostis stolonifera; Fungal diseases; Symptoms; Trials; Fungicides; Preventive control; Resistance
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| Abstract/Contents: | Suggests that "dollar spot (Sclerotinia homoeocarpa) is the most important fungal disease of creeping bentgrass (Agrostis palustris)...S. homoeocarpa does not produce spores; instead it is soil-born. The dormant mycelium in plant material insures [ensures] its survival year to year." Suggests that "maximum epidemics occur during September and October when inoculum levels are greatest and prolonged leaf wetness is common. It is frequently stated that a majority of the fungicide used by golf course superintendents is used against dollar spot disease." Describes possible symptoms of the disease, explaining that "it looks similar to a spider web when seen for the first time. First, water-soaked leaf blades give way to a lesion that is a dead leaf section, the initial color of which is bleached white with a reddish border." States that "Poa annua is highly susceptible to dollar spot...If untreated a hundred more 'spots' can occur in an area as small as ten feet." Presents study conducted "in Manhattan, Kansas - a semi-cool, humid environment where high dollar spot pressure exists in fall and must be managed by golf course superintendents." Details methods and materials used in the study, stating that then "study was conducted between 1997 and 1999 on a USGA [United States Golf Association] green at Rocky Ford Turfgrass Center in Manhattan, Kansas." States "cultivars were replicated three times, and consisted of Crenshaw, L-93, Penncross and Providence." States that dollar spot was found among "Crenshaw, L-93, Penncross, and Providence bentgrass cultivars differed. From the start, compared to all other bentgrass cultivars, Crenshaw had greater susceptibility to dollar spot than any of the others...By the second year it was obvious displayed the best dollar spot resistance. States "applications were timed on a calendar basis every 7, 14, or 28 days using a CO." Reports the "preventative 14 day schedule did not allow the reduced fungicide input that...could achieve some cultivars. It turned out the preventative 14 day strategy was the only program that worked well for Crenshaw, given a year of high disease pressure." States that "a curative or post-infection strategy requires a fungicide application only when a turf manager sees disease." |
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| Language: | English |
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| References: | 5 |
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| Note: | Pictures, color
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Settle, D. 2007. Past and present: Dollar spot research from Kansas State to Chicago: A disease resistant bentgrass cultivar allows flexibility to control dollar spot. On Course. 60(8):p. 13-18. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/bulls/article/2007jan13.pdf
Last checked: 09/30/2008
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 B8 |
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