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| DOI: | 10.1094/Phyto-70-1033 |
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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/Phyto70n11_1033.pdf
Last checked: 08/06/2013
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Madsen, James P.;
Hodges, Clinton F. |
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| Author Affiliation: | Madsen: Graduate Research Assistant; Hodges: Professor, Horticulture and Plant Pathology, Department of Horticulture, Iowa State University, Ames |
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| Title: | Nitrogen effects on the pathogenicity of Drechslera sorokiniana and Curvularia geniculata on germinating seed of Festuca rubra |
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| Section: | Ecology and epidemiology
Other records with the "Ecology and epidemiology" Section
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| Source: | Phytopathology. Vol. 70, No. 11, November 1980, p. 1033-1036. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 4 |
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| Related Web URL: | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Abstracts/Phyto70_1033.htm
Last checked: 08/06/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Festuca rubra subsp. rubra
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| Abstract/Contents: | "The effects of (NH4)2SO4 and CA(NO3)2 on the pathogenicity of Drechslera sorokiniana and Curvularia geniculata, singly and in combination on germinating seed of Festuca rubra were evaluated. Both nitrogen sources at 10-2 M reduced the rate of seedling emergence and total emergence from uninoculated seed in nonautoclaved soil was less than that in autoclaved soil in response to both nitrogen sources at 10-2 M. These responses were suggestive of direct nitrogen toxicity to the factors in nonautoclaved soil that, when combined with direct nitrogen toxicity, additively reduced total emergence. A concentration of 10-3 M of both nitrogen sources generally stimulated rate of seedling emergence and had no effect on total seedling emergence from uninoculated seed. The lowest concentration (10-4 M) of the nitrogen sources tested showed mixed effects on rate of seedling emergence and total emergence from uninoculated seed in autoclaved and nonautoclaved soil. The highest concentration of both nitrogen sources enhanced the pathogenicity of D. sorokiniana and C. geniculata, inoculated on seed both alone and in combination. Rate of seedling emergence was slowed by D. sorokiniana and the combination of D. sorokiniana + C. geniculata, and each pathogen and their combination also reduced total seedling emergence. The combination of the pathogens, together with the highest concentration of either nitrogen source, produced the most severe reduction in total seedling emergence. These results suggest a combination of direct toxicity to germinating seed and an enhancement of the pathogenicity of D. sorokiniana and C. geniculata induced by itrogen-containing compounds." |
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| Language: | English |
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| References: | 17 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Madsen, J. P., and C. F. Hodges. 1980. Nitrogen effects on the pathogenicity of Drechslera sorokiniana and Curvularia geniculata on germinating seed of Festuca rubra. Phytopathology. 70(11):p. 1033-1036. |
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| DOI: 10.1094/Phyto-70-1033 |
| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/Phyto70n11_1033.pdf
Last checked: 08/06/2013
Requires: PDF Reader |
| 
MSU catalog number: b2219736a |
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