Answer: No doubt your tree was grown under controlled conditions in the nursery before you purchased it , which may have included applications of growth regulators. It might also be that your tree is flowering but not producing fruit due to some stress (although I'm not sure what that stress might be). The only thing my research reveals is a potential for nematodes in the soil in your growing region. This can stop a fig tree from bearing fruit. Aside from that, I'm at a loss to suggest anyting else. Here's a publication that might help you determine just why your tree is not fruiting:
Best wishes with your tree!
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