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Table 2 Solubilization of tricalcium phosphate by the tested rhizobacterial strains

From: Screening and optimization of indole-3-acetic acid production and phosphate solubilization by rhizobacterial strains isolated from Acacia cyanophylla root nodules and their effects on its plant growth

Isolates PVK medium NBRIP medium
Solubilization efficiency (SE%) Final pH P2O5 liberated (μg ml-1) Solubilization efficiency (SE%) Final pH P2O5 liberated (μg ml-1)
Agrobacterium sp. 66 ± 1.41 5.95 ± 0.04 298 ± 9.89 66 ± 2.82 5.69 ± 0.02 488 ± 11.13
Phyllobacterium sp. 96 ± 2.82 5.8 ± 0.03 410 ± 8.48 91 ± 2.12 5.2 ± 0.04 576 ± 8.48
Bacillus sp. 200 ± 4.94 5.28 ± 0.07 519 ± 9.19 190 ± 3.53 4.65 ± 0.07 782 ± 9.19
Rhizobium sp. 183 ± 4.94 5.4 ± 0.02 480 ± 12.72 183 ± 2.12 4.85 ± 0.04 684 ± 5.65
  1. Correlation coefficient between final pH and P2O5 liberated (r = − 0.95 in PVK; r = − 0.98 in NBRIP); between solubilization efficiency and P2O5 liberated (r = 0.95) in both media