Oroxylum indicum is a medicinally important forest tree species. Due toindiscriminate exploitation for medicinal purpose, habitat destruction, the natural population of O. indicum is reported endangered. Therefore an experiment was conducted to to study the effect of bioinoculation on the growth and quality of the seedlingsand conserve the plant species. The seedlings were inoculated with plant growth promoting microbes mainly, bacteria (B), fungus(F) and mycorrhiza (M), both alone and consortium. The total biomass was maximum (156.01±1.94) in T F treatmentand minimum (118.78±0.06) in Control treatment. The biovolume index was maximum (64.15±3.088) in T M+B+F and minimum (14.43±0.33) in Control treatment. The Quality index (Qi) of the seedlings was maximum (1.041±0.089) in T B (seedlings treated with bacteria) while, Qi was minimum (0.761±0.090) in Control treatment.
Key words: Oroxylum indicum, endangered, bioinoculation, biovolume index,quality index.
