Fungicide sensitivity in Tapesia yallundae populations collected from 15 wheat fields in the Western Cape province of South Africa

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dc.contributor.authorNtushelo K.
dc.contributor.authorCrous P.W.
dc.date.accessioned2011-05-15T15:55:05Z
dc.date.available2011-05-15T15:55:05Z
dc.date.issued2004
dc.description.abstractIn the Western Cape province of South Africa, eyespot disease (Tapesia yallundae) of wheat is primarily controlled by fungicide applications. Previous studies have shown, however, that isolates of T. yallundae vary in their response to fungicides. In the present study, 20 isolates from each of 15 fields with different fungicide histories were screened against carbendazim at 1 μg/ml; propiconazole, tebuconazole and flutriafol each at 0.1, 0.5, 1 and 2 μg/ml; and flusilazole and bromuconazole each at 0.05, 0.1, 0.5 μg/ml. No isolates were resistant to carbendazim. Flusilazole proved to be most effective of all the triazole fungicides tested. Based on the analysis of EC50 values compared to that of a field at Gouda that is at baseline sensitivity, shifts in sensitivity were detected to all triazoles. This suggests that measures for prevention of build-up of resistance need to be employed.
dc.description.versionArticle
dc.identifier.citationSouth African Journal of Plant and Soil
dc.identifier.citation21
dc.identifier.citation2
dc.identifier.issn2571862
dc.identifier.urihttp://hdl.handle.net/10019.1/9570
dc.subjectcrop damage
dc.subjectdisease control
dc.subjectdisease resistance
dc.subjectfungicide
dc.subjectAfrica
dc.subjectSouth Africa
dc.subjectSouthern Africa
dc.subjectSub-Saharan Africa
dc.subjectWestern Cape
dc.subjectMollisia
dc.subjectOculimacula yallundae
dc.subjectTriticum
dc.subjectTriticum aestivum
dc.titleFungicide sensitivity in Tapesia yallundae populations collected from 15 wheat fields in the Western Cape province of South Africa
dc.typeArticle
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