Effect of temperature, biofungicides and fungicides on clubroot of selected brassica crops

dc.contributor.advisorMcDonald, Mary Ruth
dc.contributor.advisorGossen, Bruce D.
dc.contributor.authorAdhikari, Kalpana KC.
dc.date.accessioned2020-08-24T15:43:11Z
dc.date.available2020-08-24T15:43:11Z
dc.date.copyright2010
dc.degree.departmentDepartment of Plant Agricultureen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractClubroot is an economically important disease of Brassica crops caused by the soil-borne protist 'Plasmodiophora brassicae' Woronin. Shanghai pak choy was identified as a model crop for the study of clubroot on canola. The Rapid Cycling Brassica lines of 'Brassica carinata' and 'B. juncea', and two canola lines 46A65 and 46A76 were susceptible to pathotype 6 in Ontario. Controlled environment and field trials demonstrated that low temperature (<= 17° C) reduced initial infection and clubroot development. Severe clubroot was observed at temperatures 19.6°-25.5° C. Drench application of the biofungicides Mycostop® and Actinovate® and the fungicides Allegro® 500F and Ranman® 400 SC reduced clubroot severity in Shanghai pak choy under controlled conditions. Ranman application was effective when disease pressure was moderate to high. Fungicide application is not needed when there is a low risk of clubroot as a result of cool soil temperatures early or late in the season.
dc.identifier.urihttps://hdl.handle.net/10214/19550
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectBrassica crops
dc.subjectClubroot
dc.subjectTemperature
dc.subjectBiofungicides
dc.subjectFungicides
dc.titleEffect of temperature, biofungicides and fungicides on clubroot of selected brassica crops
dc.typeThesisen_US

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