Outdoor soil already contains living communities. The presence of soil alone does not tell you which fungi are present or whether extra inoculation will contribute. Check the plant and keep expectations specific to your conditions.
Keep the context.
Biological compatibility, successful colonisation and a measurable plant response are different questions. The growing conditions matter, and general research is not a promise of a particular result with MegaMyco.
References
Read the biology at its source. These references describe general science and study-specific findings.