Bacillus species Inhibition zone (area in cm2) PGPR activity of Bacillus spp. Phosphorous solubilized (μg/ml) IAA production (μg/ml) Siderophores production [Dia. Of the orange yellow halo produced (cm)] Ammonia production* B. amayloliquefaciens DSBA-11 4.11a ± 0.72 42.6a ± 1.9 95.4a ± 0.85 0.880b ± 0.16 ++ B. amayloliquefaciens DSBA-12 3.31ab ± 0.55 36.6b ± 0.96 90.7b ± 1.58 0.893b ± 0.04 ++ B. subtilisDTBS-5 3.07ab ± 0.15 30.0c ± 1.05 73.4bc ± 1.01 1.13a ± 0.03 +++ B. cereus JHTBS-7 2.52b ± 0.26 31.3c ± 1.85 68.0c ± 1.01 0.746bc ± 0.03 ++ B. pumulisMTCC-7092 2.30c ± 0.1 24.6d ± 0.65 72.8bc ± 0.79 0.686c ± 0.02 + *+: less production, ++: Moderate production, +++: high production the values within a column with different letters are significantly different by using Fisher’s LSD test (α=0.05). Data present means of the experiment within 3 replications each.

Table 2: Antagonistic and plant growth promoting activities of Bacillus species isolated from rhizosphere of wilted tomato plants in vitro conditions.