Influence of carbon/nitrogen ratio on Pythium aphanidermatum and on Pythium-induced damping-off of radish

A. Al-Azizi, A. M. Al-Sadi, H. Dietz, F. A. Al-Said, M. L. Deadman

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4 Citations (Scopus)


A study was conducted to investigate the effect of fertilizers with different carbon/nitrogen ratios (no carbon, NC; low carbon/nitrogen ratio, LC; high carbon/nitrogen ratio, HC) on Pythium aphanidermatum and on radish damping-off. The ratio of carbon to nitrogen applied in the field was 29, 22 and 0 in 2007 and 22, 17 and 0 in 2008 for HC, LC (as cattle manure) and NC, respectively. Field experiments over two growing seasons provided evidence for the lowest mortalities due to Pythium-induced radish damping-off to be in soil amended with LC (P0.05), which may imply a lack of evidence for the effect of carbon/nitrogen ratio on reproduction in P. aphanidermatum.

Original languageEnglish
Pages (from-to)181-185
Number of pages5
JournalJournal of Plant Pathology
Issue number1
Publication statusPublished - Mar 2013



  • Damping-off
  • Organic agriculture
  • Organic matter
  • Pythium aphanidermatum
  • Soil-borne diseases

ASJC Scopus subject areas

  • Plant Science

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