Fig. 3

Carbon (MBC), nitrogen (MBN), and phosphorus (MBP) of microbial biomass in the rhizosphere of ‘Baiana’ and ‘Doce’ prickly-pear cactus, including both non-inoculated and inoculated with Bacillus and Paenibacillus, at 90 and 270 days of plant growth. Lowercase letters indicate differences between inoculants within the same genotype, while uppercase letters indicate differences between genotype within the same inoculant, based on Tukey’s HSD test (p < 0.05).