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dc.contributor.authorHaralson, Jeremy Charles
dc.date.accessioned2014-03-04T16:24:06Z
dc.date.available2014-03-04T16:24:06Z
dc.date.issued2009-05
dc.identifier.otherharalson_jeremy_c_200905_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/haralson_jeremy_c_200905_ms
dc.identifier.urihttp://hdl.handle.net/10724/25476
dc.description.abstractn 2007 and 2008, a survey of 18 blueberry propagators in south Georgia was conducted to determine the incidence of soilborne plant pathogens and the prevalence of propagation practices currently used. There was little consistency in propagation methods across nurseries, documenting a need for developing standardized best practices. Across 204 symptomatic blueberry cuttings sampled during four survey dates, 15.2, 4.9, 1.0, and 16.7% harbored species of Cylindrocladium, Rhizoctonia, Oomycetes, and Fusarium, respectively, although the pathogenicity of Fusarium remains to be confirmed. A link was established between propagation media reuse and presence or absence of Cylindrocladium. Fungicide efficacy trials were conducted on cuttings planted in propagation medium infested with Cylindrocladium parasiticum or Rhizoctonia sp. Fludioxonil proved to be the most effective against Cylindrocladium, whereas fludioxinil, flutolanil, and azoxystrobin were effective against Rhizoctonia. This survey provides the groundwork for future standardized recommendations for propagating diseases-free blueberry cuttings.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectCylindrocladium parasiticum
dc.subjectRhizoctonia
dc.subjectPythium
dc.subjectPhytophthora
dc.subjectblueberry
dc.subjectVaccinium
dc.subjectvegetative propagation
dc.titlePathogens associated with blueberry cutting failure in south Georgia nurseries and their control
dc.typeThesis
dc.description.degreeMS
dc.description.departmentPlant Pathology
dc.description.majorPlant Pathology
dc.description.advisorHarald Scherm
dc.description.advisorPhillip Brannen
dc.description.committeeHarald Scherm
dc.description.committeePhillip Brannen
dc.description.committeeScott NeSmith
dc.description.committeeGerard Krewer


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