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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Giesler, L. J.;
Yuen, G. Y.;
Horst, G. L. |
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| Author Affiliation: | Giesler and Yuen: Department of Plant Pathology, University of Nebraska, Lincoln, Nebraska; Horst: Department of Horticulture, University of Nebraska, Lincoln, Nebraska |
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| Title: | Influence of irrigation and leaf wetness duration on perennial ryegrass phyllosphere colonization by applied bacterial strains |
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| Meeting Info.: | APS Annual Meeting, August 9-13, 1997, Rochester, New York |
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| Source: | Phytopathology. Vol. 87, No. 6, June 1997, p. S33. |
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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: Lolium perenne; Irrigation; Leaf wetness duration; Bacteria; Irrigation frequency; Irrigation scheduling; Disease development; Enterobacter cloacae; Stenotrophomonas maltophilia; Microenvironments; Canopy
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| Abstract/Contents: | "Irrigation frequency and timing has been reported to affect turfgrass disease development. We investigated the effects of irrigation timing or frequency on populations of applied bacteria. Irrigation was applied on daily AM and PM cycles, and every 3-day AM cycles to perennial ryegrass (Lolium perenne L.) Populations of Enterobacter cloacae EcCT-501, Bacillus megaterium B153-2-2, and Stenotrophomonas maltophilia C3 were monitored and canopy microenvironmental conditions were analyzed. Individual irrigation events caused reductions in populations (<1 log CFU/g foliage), but all three bacterial strains maintained similar populations across the three irrigation treatments. Irrigation on a daily AM schedule resulted in shorter mean duration of leaf wetness (12.2 h) than the other treatments (over 13.8 h) in the 1995 season. In growth chamber experiments comparing 0, 6, 12, and 18 h of leaf wetness durations for influence on bacterial colonization, 6 h of leaf wetness was found to be sufficient for bacterial multiplication and no differences in colonization were observed for longer durations. We conclude that irrigation timing and frequency can affect canopy moisture; however, canopy moisture under all of the irrigation condistions tested is sufficient for bacterial multiplication." |
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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):
Giesler, L. J., G. Y. Yuen, and G. L. Horst. 1997. Influence of irrigation and leaf wetness duration on perennial ryegrass phyllosphere colonization by applied bacterial strains. Phytopathology. 87(6):p. S33. |
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