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| DOI: | 10.1094/Phyto-70-628 |
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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/Phyto70n07_628.pdf
Last checked: 08/06/2013
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Hodges, Clinton F. |
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| Author Affiliation: | Professor, Horticulture and Botany and Plant Pathology, Department of Horticulture, Iowa State University, Ames |
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| Title: | Interaction of sequential leaf senescence of Poa pratensis and pathogenesis by Drechslera sorokiniana as influenced by postemergent herbicides |
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| Section: | Disease control and pest management
Other records with the "Disease control and pest management" Section
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| Source: | Phytopathology. Vol. 70, No. 7, July 1980, p. 628-630. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 3 |
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| Related Web URL: | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Abstracts/Phyto70_628.htm
Last checked: 08/06/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Poa pratensis; Drechslera; Bipolaris; Bipolaris sorokiniana; Mecoprop; Silvex; Herbicide interaction
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| Abstract/Contents: | "The influence of four chlorophenoxy (2,4-D, 2,4,5-T, 2,4,5-TP, MCPP) and one benzoic acid (dicamba) postemergent herbicides on pathogenesis by Drechslera sorokiniana on progressively older leaves of Poa pratensis was determined. Disease increased on each successively older leaf of untreated control plants and a direct relationship was established between increasing leaf senescence and pathogensis. The soil-drench application of 2,4-D and the spray and soil-drench application of 2,4,5-T, MCPP, and dicamba increased the level of disease on leaves of all ages above that of the controls and on each older leaf of the plants in the respective treatments. Spray-applied 2,4-D had little influence on pathogenesis, and spray-applied 2,4,5-TP decreased disease. Extensive chlorosis and straw-colored blighting was associated with pathogenesis on the two oldest leaves of shoots exposed to 2,4,5-T, MCPP, and dicamba and was suggestive of premature leaf senescence. Little chlorosis and blighting occurred on the two oldest leaves of infected plants not exposed to the herbicides and no chlorosis occurred on uninoculated controls. It was hypothesized that the increase in pathogenesis by D. sorokiniana on progressively older leaves of plants exposed to auxinlike herbicides is the function of a host-pathogen-herbicide interaction that enhances the rate of sequential leaf senescence." |
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| Language: | English |
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| References: | 22 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hodges, C. F. 1980. Interaction of sequential leaf senescence of Poa pratensis and pathogenesis by Drechslera sorokiniana as influenced by postemergent herbicides. Phytopathology. 70(7):p. 628-630. |
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| DOI: 10.1094/Phyto-70-628 |
| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/Phyto70n07_628.pdf
Last checked: 08/06/2013
Requires: PDF Reader |
| 
MSU catalog number: b2219736a |
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