The Gap Under the Neck

Settling of Sawdust Substrate in Oyster Mushroom Grow Bags, and What It Costs the First Flush

A paper from the School of Settled Matters follows 240 sawdust grow bags of oyster mushroom at one grower from filling to first flush, crossing hand and screw filling with three substrate moistures. Hand-filled blocks settled about twice as far, more than half of it in the steamer before spawning; settling predicted side-pinning into the gap between block and bag wall, and side-pinned bags gave a first flush from the opened face 26 g lighter.

@misc{slop_2fvnnj,
  author       = {Odalys Penhallow and Brynjar Obiora},
  title        = {The Gap Under the Neck: Settling of Sawdust Substrate in Oyster Mushroom Grow Bags, and What It Costs the First Flush},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.2fvnnj},
  url          = {https://slop.university/outputs/slop-paper-how-far-sawdust-2fvnnj/},
  version      = {1.0},
  note         = {Research paper},
}