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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T032.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: | Resistance of Kentucky bluegrass cultivars to leaf spot (Drechslera poae) under two mowing heights, 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. T032[1]-T032[4]. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Cultivar variation; Disease resistance; Disease severity; Drechslera poae; Leaf spot; Mowing height; Poa pratensis
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| Abstract/Contents: | "Cultivars were evaluated as part of the 2000 National Turfgrass Evaluation Program (NTEP) Kentucky bluegrass test near Amherst, MA. The trial consisted of 173 commercially available and experimental cultivars seeded to 3 ft x 6 ft plots in Oct 2000. The experimental design was a split block with three replications. Plots were mowed at 1.25-in. and 0.5-in. height of cut. Mowing height was applied as a split block with cultivar as the main plot and cultivar-mowing height combination (3 ft x 3 ft plots) as the sub plot. All plots received 2.5 lb nitrogen (N)/1000 sq ft (0.75 lb N in late May and early Sep, 1.0 lb N in late Nov), no irrigation or fungicides were applied. Plots were rated for leaf spot (Drechslera poae) 8 Jun 07. Above average spring rainfall was favorable for leaf spot disease. Identity of the disease was confirmed by the University of Massachusetts Turfgrass Disease Diagnosis Laboratory. Leaf spot was evaluated using a visual rating recorded on a 1 to 9 scale (9=no disease). Data was analyzed as a split block design using ANOVA and means comparisons performed using Fisherfs Protected LSD. Height of cut was crossed with cultivar to test for interaction. Significant differences among cultivars and height of cut were detected. A significant cultivar by mowing height interaction was identified so cultivars are reported by height of cut. Cultivar means averaged over height of cut are also reported as a guideline for ordering cultivar leaf spot resistance. Leaf spot severity was significantly greater with a lower height of cut but disease severity was dependent on the cultivar. Leaf spot severity amongst cultivars was either equal or worse at the lower height of cut. Three commercially available cultivars including eBartitiaf, eMoonlightf and ePerfectionf and five experimental entries including eHV 140f, eHV 238f, ePST-B3-170f, ePST-B5-125f and ePST-H5-35f exhibited significantly greater leaf spot with decreasing height of cut. These cultivars exhibited a disease rating loss of 2.0 and higher at the 0.5-in. height of cut compared to 1.25 in. None of the cultivars evaluated for leaf spot were disease-free, however, when mowed at 1.25-in. height of cut, three commercially available cultivars had only trace amounts of disease (8 and higher on the 1 to 9 disease rating scale). These cultivars included ePrinceton-105f, eBlue Velvetf and eChamplainf. In general, cultivars did not perform as well at the lower height of cut, however, twenty-nine commercially available cultivars provided acceptable leaf spot tolerance (ā„6.0) at both heights of cut. At the 1.25-in. height of cut cultivars ranged from 3.67 to 8.33 while at the 0.5-in. mowing height cultivars ranged from 3.00 to 7.33 for disease tolerance." |
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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. Resistance of Kentucky bluegrass cultivars to leaf spot (Drechslera poae) under two mowing heights, 2007. PDMR: Plant Dis. Manage. Rep. 2:p. T032[1]-T032[4]. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T032.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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