A disease assay for <i>Rhizoctonia solani</i> on potato (<i>Solanum tuberosum</i>)


  • D. Bienkowski
  • A. Stewart
  • R.E. Falloon
  • M. Braithwaite
  • L.L. Loguercio
  • E. Hicks




Rhizoctonia solani is an important soilborne pathogen of potato causing black scurf on tubers and shoot/stolon canker on young plants These diseases reduce the quality of fresh and seed potatoes and may harm crop establishment A pathogenicity test has been developed for the study of biological suppression of diseases caused by R solani Disease expression from two R solani isolates was assessed in potato plants grown from tissue cultured plantlets or from minitubers The isolates were cultured in two media branwater or barley grainV8 juice which were compared as inoculants of potting mix at several standardised rates The proportions of diseased stolons and necrotic shoots were determined after 7 weeks growth in a greenhouse Significantly different levels of disease incidence were found between the isolates between inoculum concentrations for one isolate and (only with minitubers) between inoculum media Rates of inoculum that produced disease levels suitable for use in biocontrol assays were determined




How to Cite

Bienkowski, D., Stewart, A., Falloon, R., Braithwaite, M., Loguercio, L. and Hicks, E. 2010. A disease assay for &lt;i&gt;Rhizoctonia solani&lt;/i&gt; on potato (&lt;i&gt;Solanum tuberosum&lt;/i&gt;). New Zealand Plant Protection. 63, (Aug. 2010), 133–137. DOI:https://doi.org/10.30843/nzpp.2010.63.6553.




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