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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T041.pdf
Last checked: 11/11/2016
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| Publication Type:
| Report |
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| Author(s): | Uddin, W.;
Kern, J.;
Yenez, J. |
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| Author Affiliation: | Department of Plant Pathology, The Pennsylvania State University, University Park, PA |
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| Title: | Management of Drechslera leaf spot/melting-out with fungicides, 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. T041. |
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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: Disease control; Drechslera leaf spot; Drechslera poae; Fungicide efficacy; Fungicide evaluation; Poa pratensis
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| Cultivar Names: | Park |
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| Abstract/Contents: | "The experiment was conducted at the Valentine Turfgrass Research Center, University Park, PA, on Kentucky bluegrass mowed three times per week at a cutting height of 2-in. The soil was Hagerstown silt loam with a soil pH of 6.8. The test area was fertilized with 0.5 lb nitrogen (Urea 46-0-0) per 1000 sq ft on 24 Apr. Treatment plots, 3 ft Π6 ft, were arranged in a randomized complete block design with three replications. Fungicides were applied with a CO2-powered sprayer, using a TeeJet 11008E nozzle at 40 psi, in water equivalent to 2 gal per 1000 sq ft. Applications were made on 3, 17, and 31 May. Assessment of the spring leaf spot was made on 9, 16, 23, and 30 May, and 6 Jun using a 0 to 10 severity index with 10=>90% diseased turf. Data were subjected to analysis of variance, and the mean values were separated using the Waller-Duncan k-ratio test (k=100). Leaf spot development in the Kentucky bluegrass in the experimental area was in the early stage of disease development under cool and wet conditions (disease severity index of 2.0) when the experiment was initiated. In the first assessment on 9 May, almost all the treatments provided good control of the disease. Disease was most severe on 23 May, and Insignia (0.9 oz) and Medallion (0.5 oz), Daconil Ultrex (3.2 oz), Instrata (6 fl oz), Heritage MAXX (1.9 oz), Tartan (1.5 fl oz), Chipco 26GT (4 oz), and Trinity (1 fl oz) provided very good to excellent control; however, the reduced efficacy of certain fungicides such as Instrata, Banner MAXX, Trinity, and Medallion, on Drechslera leaf spot at low rate was evident. Disease started to subside in early June and all the treatments provided similar control during that period. No phytotoxicity was observed in any treatment plot." |
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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):
Uddin, W., J. Kern, and J. Yenez. 2008. Management of Drechslera leaf spot/melting-out with fungicides, 2007. PDMR: Plant Dis. Manage. Rep. 2:p. T041. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T041.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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