tPercentage increase of a growth variable by bacterial treatment compared to the control. uGSF = growth stimulation frequency; frequency at which a strain increased growth (at 95% confidence level) in all measurements across trials. vFIT2 = Frequency in top 2 strains category. wNumbers followed by the same letter in each column are not significantly different at α = 0.05 according to LSD test. xNA = not applicable. Significant difference between treatment and control () according to Dunnett’s test. — = no data or strain was not tested.