Abstract
The sensitivity of 282 isolates ofSeptoria nodorum was tested on prochloraz, propiconazole and guazatine, and of 129 isolates ofDrechslera teres on prochloraz, propiconazole, imazalil and triadimefon. There was a great variation in sensitivity between isolates particularly at relatively low concentrations of the fungicides. However, none of the isolates was considered resistant towards the sterol biosynthesis inhibitors tested. Some isolates ofS. nodorum grew on concentrations of guazatine that may present difficulties in controlling them under practical conditions.
Samenvatting
Isolaten vanSeptoria nodorum (n=282) werden getoetst op gevoeligheid voor prochloraz, propiconazool en guazatine en vanDrechslera teres (n=129) voor prochloraz, propiconazool, imazalil en triadimefon. Er waren grote verschillen in de gevoeligheid van de isolaten, in het bijzonder bij lage concentraties van de fungiciden. Geen van de isolaten kan echter als resistent tegen sterolbiosynthese-remmers worden opgevat. Het feit, dat sommige van de isolaten vanS. nodorum zich ontwikkelden op media die hoge concentraties guazatine bevatten, kan echter duiden op moeilijkheden bij de bestrijding onder praktische omstandigheden.
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Olvång, H. Sensitivity of Drechslera teres and Septoria nodorum to sterol-biosynthesis inhibitors. Netherlands Journal of Plant Pathology 94, 57–68 (1988). https://doi.org/10.1007/BF01998396
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DOI: https://doi.org/10.1007/BF01998396