Bentonite clay can absorb a lot of moisture. This makes it useful for mushroom growers, who use it in a ‘casing medium’, which also includes peat and lime. The mixture covers the compost in which the mushrooms grow, trapping moisture and creating a damp, dense growing medium.
Te whakamahi i tēnei tūemi
Parkvale Mushrooms
Photograph by Clive Thompson
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