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Abstract
Single and combined inoculation of liquid PGPR inoculants on rice seed germination and growth of seedlings under green house trial were investigated. The selected plant growth promoting rhizobacteria namely Azospirillum sp, Azotobacter sp and Pseudomonas were mixed with protective substsances (Trehalos 1%) base, for individual bacteria and on rice ADT37 . These formulated inoculants were used for seed treatment, seedling treatment and soil application, in rice under in vitro germination conditions. Higher percentage of seed germination was recorded in T5 treatment (Azosprillum sp + Pseudomonas+ Bacillus sp - 89.25) followed by (T4 –Azotobacter sp +Pseudomonas + Bacillus sp - 88.50) than the single inoculation . In all the treatments seed vigour index was higher (T5 - 7348 ± 97.2)