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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2000.90.6.S1#page=71
Last checked: 10/16/2015
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Serlemitsos, K. A.;
Uddin, W. |
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| Author Affiliation: | Department of Plant Pathology, The Pennsylvania State University, University Park, PA |
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| Title: | Blast disease (gray leaf spot) of perennial ryegrass turf: Influence of temperature and leaf wetness duration on disease severity and incidence |
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| Section: | Abstracts submitted for presentation at the 2000 APS annual meeting
Other records with the "Abstracts submitted for presentation at the 2000 APS annual meeting" Section
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| Meeting Info.: | APS Annual Meeting, New Orleans, LA, August 12-16, 2000 |
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| Source: | Phytopathology. Vol. 90, No. 6, June 2000, p. S71. |
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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: Gray leaf spot; Lolium perenne; Temperatures; Leaf wetness duration; Disease severity; Disease development; Environmental factors; Interactions; Models; Disease forecasting
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| Cultivar Names: | Legacy II |
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| Abstract/Contents: | "The effects of temperature and leaf wetness duration (LWD) on development of blast disease of Legacy II perennial ryegrass were evaluated. Disease severity (DS) and incidence (DI) at 4 temperatures (20, 24, 28, and 32°C) and 12 LWD's (3 to 36 h at 3-h intervals) were assessed. In the first experiment, DS and DI increased with increasing temperature to 28°C, but were reduced at 32°C. There were significant interactions between temperature and LWD. There was a greater LWD requirement for disease development at 20, 24, and 32°C than at 28°C. The relationship between DS and LWD was best described by a quadratic model at 20 and 24°C (y=-0.61+0.16x-0.002x2 and y=-1.23+0.40x-0.008x2, respectively), and a cubic model at 28 and 32°C (y=-1.34+1.22x-0.05x2+0.0006x3 and y=0.90+0.34x-0.0001x3, respectively). The relationship between DI and LWD followed a similar trend to that of DS and LWD. Comparable results were obtained in the second experiment. Data in these studies will be used to develop a predictive model for the development of blast disease epidemics on perennial ryegrass." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Serlemitsos, K. A., and W. Uddin. 2000. Blast disease (gray leaf spot) of perennial ryegrass turf: Influence of temperature and leaf wetness duration on disease severity and incidence. Phytopathology. 90(6):p. S71. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2000.90.6.S1#page=71
Last checked: 10/16/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 599 .P48 |
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