White dust falling off of king oyster innoculated substrate. What is it?

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posted 11 years ago

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My basket of oyster mushrooms has what looks like a really bad case of dandruff. I have never heard of this happening though this is my first successful inoculation of mass substrate. I assume it can't be spores since there are no fruiting bodies yet, right? What am i to make of this dust? Is it a bunch of particles of mycelium?

Central Taiwan. Pan-tropical Growing zone 10A?

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