Fig. 3From: Crop management as a driving force of plant growth promoting rhizobacteria physiologyPhosphate solubilization index in solid NBRIP supplemented with tricalcium phosphate or phytate by phosphate solubilizing bacteria isolated from conventional and organic farming systems (n = 4). Means are statistically different by Student’s t test (*P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001)Back to article page