Mushroom rearing preparations, namely, plant growth regulating preparations; growth regulating preparations for mushrooms cultivation; mycelium growth stimulators, namely, biostimulants being plant growth stimulants; mushroom growth stimulators, namely, biostimulants being plant growth stimulants; biostimulants for mushrooms being plant growth stimulants; mushroom yield enhancers, namely, compounds for stimulating fruiting of mushrooms from mycelium; shiitake mushroom yield enhancers, namely,...