SPRAY STRATEGIES AND SELECTION FOR FUNGICIDE RESISTANCE: FENHEXAMID RESISTANCE IN BOTRYTIS CINEREA AS A CASE STUDY

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dc.contributor.advisorHu, Mengjunen_US
dc.contributor.authorBoushell, Stephen Carlen_US
dc.contributor.departmentPlant Science and Landscape Architecture (PSLA)en_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2023-06-23T05:43:40Z
dc.date.available2023-06-23T05:43:40Z
dc.date.issued2023en_US
dc.description.abstractFungicide resistance is a limiting factor in sustainable crop production. Despite the wide adoption of general resistance management strategies by growers, the recent rate of resistance development in important fungal pathogens is concerning. In this study, Botrytis cinerea and the high-risk fungicide fenhexamid were used to determine the effects of fungicide dose, tank mixture, and application timing on resistance selection across varied frequencies of resistance via both detached fruit assays and greenhouse trials. The results showed that application of doses lower than the fungicide label dose, mixture with the low-risk fungicide captan, and application post-infection seem to be the most effective management strategies in our experimental settings. In addition, even a small resistant B. cinerea population can lead to a dramatic reduction of disease control efficacy. Our findings were largely consistent with the recent modeling studies which favored the use of the lowest possible fungicide dose for improved resistance management.en_US
dc.identifierhttps://doi.org/10.13016/dspace/yt83-zkqx
dc.identifier.urihttp://hdl.handle.net/1903/29937
dc.language.isoenen_US
dc.subject.pqcontrolledPlant pathologyen_US
dc.subject.pqcontrolledPlant sciencesen_US
dc.subject.pqcontrolledAgricultureen_US
dc.subject.pquncontrolledBotrytis cinereaen_US
dc.subject.pquncontrolledFenhexamiden_US
dc.subject.pquncontrolledFungicideen_US
dc.subject.pquncontrolledPathogenen_US
dc.subject.pquncontrolledPathologyen_US
dc.subject.pquncontrolledResistanceen_US
dc.titleSPRAY STRATEGIES AND SELECTION FOR FUNGICIDE RESISTANCE: FENHEXAMID RESISTANCE IN BOTRYTIS CINEREA AS A CASE STUDYen_US
dc.typeThesisen_US

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