straw Click to see full answer. Thereof, how do you pasteurize a substrate?Pasteurize: Indoors: Straw in pillow case, nylon mesh laundry bag or similar, submerged in water and heated 160-170 degrees F. for 1 hour (for indoors on stove top ). Outdoors: Use 55 gallon drum, wire mesh basket and butane burner for pasteurizing a whole bale of straw.Furthermore, do you have to sterilize bulk substrate? This resistance to contamination is the reason bulk substrate can be inoculated with spawn in open spaces without taking special sterile precautions. If you sterilize the bulk substrate it becomes as nearly as susceptible to contaminants as highly nutritious spawn substrates like rye berries and brown rice. Also Know, what is coir substrate? Coir substrate (in its many forms) is made of coconut husk, which makes it an environment-friendly product, as rest material is used that would otherwise have gone to waste. More coconut products are coconut grit, coconut fibre (coir) and coconut chips.How much gypsum do I add to mushroom substrate?Powdered gypsum is used to increase the pH in mushroom growing substrates such as grain, sawdust, coffee grounds and straw. It is also a yield enhancer as it supplies minerals and trace elements to the mycelium. Gypsum should be mixed at a rate of 2-5% of the dry weight of the substrate.
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