Viable fungal material encounters a compatible living root. Plant and fungal signals help initiate the association, after which the fungus can enter the root cortex and form exchange structures. Colonization is a process. Putting granules near active roots creates an opportunity; it does not mean that every root is colonized immediately.
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.