Management strategies for potato early dying complex in Southern Alberta

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dc.contributor.authorRobertson, Colby James
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorYevtushenko, Dmytro P.
dc.contributor.supervisorHarding, Michael
dc.date.accessioned2020-04-27T15:20:34Z
dc.date.available2020-04-27T15:20:34Z
dc.date.issued2020
dc.degree.levelMastersen_US
dc.description.abstractAlberta potato production expanded in acres and processing recently. Production faces a yield barrier identified as potato early dying disease complex, involving soil- borne Verticillium dahliae and Pratylenchus penetrans pathogens. To address this barrier, soil treatments of Elatus® fungicide, Velum Prime® nematicide, and Pic Plus® fumigant were evaluated in commercial potato fields growing cultivar Russet Burbank. Reduced soil disturbance using a bed freshener was also investigated. Verticillium spp. and Pratylenchus spp. were morphologically identified and quantified. In-field tuber samples were assessed for yield and quality according to industry standards. Soil microbial communities were characterized using metagenomic techniques. Three site-years of results showed soil pathogen levels declined and recovered in the same years. Soil applied chemicals significantly increased potato yield with responses dependent on soil pathogen levels. The most efficacious fumigation included bed freshening. Soil microbial communities were not significantly affected by soil treatments in the short-term but longer study is recommended.en_US
dc.description.sponsorshipPotato Growers of Alberta, McCain Foods Canada, Cavendish Farms, Lamb Weston Holdingsen_US
dc.identifier.urihttps://hdl.handle.net/10133/5710
dc.language.isoen_USen_US
dc.proquest.subject0285en_US
dc.proquest.subject0480en_US
dc.proquest.subject0481en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectpotatoen_US
dc.subjectplant pathologyen_US
dc.subjectsoil scienceen_US
dc.subjectsoil microbiomeen_US
dc.subjectagricultureen_US
dc.subjectagronomyen_US
dc.subjectVerticilliumen_US
dc.subjectPratylenchusen_US
dc.subjectPotatoes -- Disease and pest resistenceen_US
dc.subjectPotatoes -- Diseases and pests -- Controlen_US
dc.subjectPotatoes -- Field experiments -- Alberta, Southernen_US
dc.subjectSoilborn plant diseases -- Controlen_US
dc.subjectSoilborn plant pathogens -- Controlen_US
dc.subjectSoil fumigationen_US
dc.subjectDissertations, Academicen_US
dc.titleManagement strategies for potato early dying complex in Southern Albertaen_US
dc.typeThesisen_US
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