In vitro sensitivity testing of Cladobotryum mycophilum to carbendazim and prochloraz manganese

dc.contributor.authorChakwiya, Alinesi
dc.contributor.authorVan der Linde, Elna J.
dc.contributor.authorKorsten, Lise
dc.contributor.emaillise.korsten@up.ac.zaen_ZA
dc.date.accessioned2015-12-08T08:53:53Z
dc.date.available2015-12-08T08:53:53Z
dc.date.issued2015-11
dc.description.abstractLimited information of fungicide efficacy on cultivated mushrooms and resistance development potential is available. Minor crop industries in general have a smaller arsenal of protectants to rely on and the likelihood of resistance build-up is of greater concern. This study focused on Cladobotryum mycophilum's sensitivity to carbendazim and prochloraz manganese following recent reports on decreased efficacy of both fungicides. The median effective dose (ED50) values for carbendazim ranged between 0.02 mg/L and 4.31 mg/L with 60% of the South African isolates being moderately resistant. The highest resistance factor for carbendazim was 215. Prochloraz manganese ED50 values varied from 0.00001 mg/L to 0.55 mg/L. A significant difference in mean ED50 values for both fungicides tested was observed. Using cluster analysis, no discrimination of isolates previously exposed and unexposed to prochloraz manganese was observed. A wide range of differences in ED50 values indicated moderate resistance to carbendazim and high sensitivity to prochloraz manganese among isolates under investigation. Discriminant analysis indicated significant differences between clusters contributed by one or a few variables. This study provided evidence that prochloraz manganese remains highly fungitoxic to C. mycophilum. However, prochloraz manganese is to be used in a disease management strategy in combination with strict farm hygiene management strategies to retain product efficacy and ensure crop protection.en_ZA
dc.description.librarianam2015en_ZA
dc.description.sponsorshipThe South African Mushroom Association (SAMFA) research team and the University of Pretoria.en_ZA
dc.description.urihttp://www.sajs.co.zaen_ZA
dc.identifier.citationChakwiya A, Van der Linde EJ, Korsten L. In vitro sensitivity testing of Cladobotryum mycophilum to carbendazim and prochloraz manganese. S Afr J Sci. 2015;111(11/12), Art. #2014-0408, 7 pages. http://dx.DOI.org/ 10.17159/sajs.2015/20140408.en_ZA
dc.identifier.issn0038-2353 (print)
dc.identifier.issn1996-7489 (online)
dc.identifier.other10.17159/sajs.2015/20140408
dc.identifier.urihttp://hdl.handle.net/2263/51123
dc.language.isoenen_ZA
dc.publisherAOSIS OpenJournalsen_ZA
dc.rights© 2015. The Author(s). Published under a Creative Commons Attribution Licence.en_ZA
dc.subjectAgaricus bisporusen_ZA
dc.subjectCobweb diseaseen_ZA
dc.subjectFungicide effectivenessen_ZA
dc.subjectFungicide resistanceen_ZA
dc.subjectFungicolous fungien_ZA
dc.titleIn vitro sensitivity testing of Cladobotryum mycophilum to carbendazim and prochloraz manganeseen_ZA
dc.typeArticleen_ZA

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