2007•Journal of Biological ControlRequires access

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

A. Muthukumar, R. Bhaskaran

Abstract

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

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Key concepts: Rhizoctonia solani, Pseudomonas fluorescens, Siderophore, Biology, Pythium, Rhizosphere, Rhizoctonia, Hydrogen cyanide