Evaluation of the fluorescent Pseudomonas isolates for antagonistic potential against Colletotrichum spp.

Abstract

Fluorescent Pseudomonas is such an extensively used biocontrol agent against many plant pathogens. Use of bioagents having biocontrol and plant growth promoters’ activities has been considered environmentally acceptable alternatives to minimize the use of chemicals. All 30 isolates of fluorescent Pseudomonas significantly reduced the fungal mycelia growth of Colletotrichum truncatum (C10), C. capsici (C5), of C. coccodes (C9), C. cajani (C1), C. acutatum (C6), C. capsici (C7), C. gloesporiodes (C4), C. lindemuthianum (C3), C. capsici (C2), C. destructivum (C8), fluorescent Pseudomonas isolate i.e. P23(10 mm), P3(10 mm), P16(10 mm), P4 (12 mm), P5 (14 mm) was maximum in reduced the fungal mycelial growth respectively. The maximum average % inhibition were recorded with the fluorescent Pseudomonas isolate of P5 (73.2%) and minimum average % inhibition were recorded with the fluorescent Pseudomonas isolate of P29 (59.6%).