In vitro evaluation of antagonistic activity of Pseudomonas fluorescens against fungal pathogen

Abstract

The present investigation was undertaken to isolate different strains of Pseudomonas fluorescens from various agroecological zones or crop’s rhizosphere like moong, brinjal, rice, chilli, mustard, chirchida and tomato. Totally eight micro flora resembling Pseudomonas fluorescens were isolated and three isolates were confirmed as P. fluorescens (strain P.f.01, strain P.f.05 and strain P.f.07). Pseudomonas fluorescens strains P.f 07 were found most effective with the highest antagonistic activity against three fungal pathogen and show maximum inhibition of mycelial growth of Fusarium moniliforme (65.45%), Rhizoctonia solani (68.23%), and Alternaria alternate (48.13%).