Fungicide effects vary widely. Active ingredient, dose, placement and timing all matter, and some treatments can inhibit mycorrhizal establishment. Check the exact product with its manufacturer or an agronomist. Do not assume that every fungicide is either harmless or equally harmful to arbuscular mycorrhizal fungi.
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.