Efficacy of Anti-Microbial Metabolites of Pseudomonas fluorescens (Trevisan) Migula against Rhizoctonia solani kuhn. and Pythium sp.


  • Annamalai University, Department of Plant Pathology, Tamilnadu, 608 002, India
  • Tamil Nadu Agricultural University, Coconut Research Station, Coimbatore, India


Pseudomonas fluorescens isolate (1-12) were collected from the rhizosphere soil and tested for their efficacy against Rhizoctonia solani causing sheath blight of rice and Pythium sp, causing damping-off of chilli. Among the 12 isolates, P. fluorescens 3 and 4 were very effective in inhibiting the mycelial growth of R. solani and Pythium sp. All the 12 isolates of P. fluorescens were tested for (he production of siderophore, salicylic acid and HCN. The isolates of P. fluorescens 3 and 4 alone showed higher production of siderophore, salicylic acid and hydrogen cyanide


Hydrogen Cyanide, Pseudomonas fluorescens, Pythium sp., Rhizoctonia solani, Salicylic Acid, Siderophore.

Subject Discipline

Agriculture Sciences

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