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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T031.pdf
Last checked: 11/11/2016
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| Publication Type:
| Report |
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| Author(s): | Ebdon, J. S. |
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| Author Affiliation: | Dept. of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA |
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| Title: | Effects of species and cultivar on dollar spot severity, 2007 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 2, 2008, p. T031. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis canina; Agrostis stolonifera; Cultivar variation; Disease control; Disease incidence; Disease severity; Dollar spot; Sclerotinia homoeocarpa
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| Abstract/Contents: | "Cultivar effects on dollar disease severity in bentgrass maintained as golf green turf was evaluated near Amherst, MA. The test consisted of 7 velvet and 20 creeping bentgrass cultivars as part of the 2003 National Turfgrass Evaluation Program test. Cultivars were planted in 3 Nov 03 to 3 ft ~ 6 ft plots. The experimental design was a randomized complete block with three replications per variety. The green was constructed on a USGA sand base root zone and was maintained at 0.125-in. height of cut, fertilized with 3.5 lb of nitrogen per season, irrigated to prevent stress, and no preventative fungicides were applied. Plots were rated for dollar spot on 2 Sep and 1 Oct 07. The identity of the disease was confirmed by the University of Massachusetts Turfgrass Disease Diagnosis Laboratory. Dollar spot incidence was evaluated by counting the total number of disease spots per plot. Data was analyzed using ANOVA and means comparisons performed using Fisherfs Protected LSD. A single degree of freedom contrast was performed to compare velvet versus creeping bentgrass pooled means. Dollar spot rating dates were crossed with cultivar to test for interaction. No significant interaction was detected so means averaged over rating date are also reported as a guideline for ordering cultivar dollar spot resistance. None of the cultivars evaluated exhibited complete dollar spot resistance. Dollar spot severity was 5.5 times greater by the 1 Oct compared to the 2 Sep rating. None of the entries evaluated provided acceptable tolerance to dollar spot (≤ 5 spots per plot) on the 1 Oct rating date. No significant difference was observed between velvet and creeping bentgrass species in resistance to dollar spot. On the 2 Sep rating date, velvet bentgrass cultivars ranged from 1 spot (unknown experimental) to 17 spots per pot (Vesper) while creeping bentgrass cultivars ranged from 3 (Declaration) to 35 (Independence). The only commercially available velvet bentgrass entries with acceptable tolerance (≤ 5 spots per plot) to dollar spot on the 2 Sep rating date were eGreenwichf, eLegendary f and eVillaf while eBenchmark DSRf, eDeclarationf, eMemorialf and ePenn A-1f creeping bentgrass exhibited acceptable tolerance to dollar spot disease. The experimental velvet bentgrass entries eEFDf and eUnknown experimentalf as well as the experimental creeping bentgrass entries eKingpinf and eSharkf also exhibited acceptable tolerance to dollar spot disease on the 2 Sep rating date." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is as abstract and tables only!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ebdon, J. S. 2008. Effects of species and cultivar on dollar spot severity, 2007. PDMR: Plant Dis. Manage. Rep. 2:p. T031. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T031.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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