Efficacy of four bioagents and two botanicals namely Trichoderma viride, Trichoderma harzianum, Pseudomonas
fluorescens, Bacillus subtilis, neem leaf extract and neem oil was evaluated against brown spot of rice under
field and lab condition. In field condition bioagents and botanicals were used as seed treatment and foliar spray.
The seed treatment (ST) Trichoderma viride @ 4g/kg seed + foliar spray (FS) Pseudomonas fluorescens @ 10
g/liter water was found effective with less disease severity of 34.39% and higher grain yield 68.60 q/ha. In vitro
condition it was observed dual culture technique, Trichoderma viride was most effective inhabiting the growth of
Helminthosporium oryzae (61.72%). Botanicals was observed, neem oil @ 3% was best effective inhibiting
growth of pathogen (54.25%) was found in food poison technique.
Key words: Brown spot, bioagents, botanical, Helminthosporium oryzae and rice.