National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Efficacy of three potential microbial bioagents, viz. Trichoderma viride, Bacillus thuringiensis, Pseudomonas fluorescens were evaluated against bacterial wilt of lettuce under hydroponic culture system. The microbial bioagents were tested in vitro for their antagonistic properties against Ralstonia solanacearum, the causal agent of bacterial disease in lettuce. Bioagents applied alone or as consortia, significantly reduced bacterial wilt pathogen in vitro producing varying sizes of inhibition zones in TTC medium. The inhibition produced by the combination of three antagonists T. viride, B.thuringiensis and P. fluorescens was significantly highest (70.27%) followed by combination of two bioagents T. viride and Bacillus thuringiensis (63.83%). This was followed by T. viride andP. fluorescens(59.84%). The combination of three antagonists T. viride, B. thuringiensis and P. fluorescens could also significantly reduce bacterial wilt incidence of lettuce plant in hydroponic culture tank
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