What volume of King Stropharia spawn should I use per cubic yard of wood chips?

Hello all,
I am hoping to establish some King Stropharia patches on wood chips that I will use for mulch around my blueberries - can anyone recommend how much spawn I need to add per cubic yard of chips to ensure good inoculation?

If the rates are very high I will probably look to multiple the spawn in buckets but would still appreciate some guidance on the proper rate (maybe 5 gallons of inoculated chips per yard of fresh chips or ).

Thanks for any advice.

Dave.

You can plan on approximately 1 pound of spawn per cubic foot. I would plan on multiplying up to make more massive quantities if I were you. I started a cubic yard last fall with the intention of making a big batch of mulch and beds this year. I used 5 bags of spawn from Fungi Perfecti.