Spawn Preparation — Mushroom — Penn State University50 ml beaker level full of rye grain 1/2 tsp. Calcium Carbonate, powder (lime) 1/4 tsp. Calcium Sulfate (gypsum) 60 ml warm water. Autoclave 35 minutes at.how make grain of gypsum powder,Patent US3828470 - Mushroom spawn and method of making same .Mushroom spawn and the method of making same wherein the substrate is . the difficulty of making the meal or powder in place of whole grain as a substrate for . Besides serving as a flocculating agent, gypsum or shale also function as.
how make grain of gypsum powder