![]() ![]() These sensors are also indicate temperature and relative humidity. To control carbon dioxide level in growbox/monotube during mushrooms fruiting period we use Carbon dioxide sensor (CO 2 detector). ⛔️ High carbon dioxide (CO 2) concentration (above 600-800 ppm). ⛔️ Low relative humidity in the GrowBox or Monotube (less than 90%). Too late start of fruiting period for such mushroom cakes. Rhizomorph mycelium can stay in the incubator for a longer period. Fruiting conditions should be provided when 50-70% of the casing layer is covered with mycelium. ⛔️ Prolonged time for casing layer colonization. Thus, an overlay can form even in a spawn jar. Overexposure of jars with colonized substrate in the incubator. ⛔️ Prolonged vegetative period after spawn run and casing. 2 - mycelium turned into crust of overlay Strange cottony mycelium or mycelium crust Mycelium crust of overlay stroma. Overlay often accompanied by Mycelium secondary metabolites or mushroom pee (phase 2 on the photo). It can turn into a dense dry crust that block mushroom cake and doesn't allow air and moisture to pass through. □ To the touch neglected form of overlay like cotton pads or polyurethane foam. Difference between cakes with fluffy/down-like, Tomentose Mycelium and fruiting cakes with a wiry-type structure, Rhizomorph Mycelium Overlay on the cake with blue-gray psilocybin spots. The difference between normal and overlayed mushroom cakes. Psilocybin mushroom cake after rehydration Overlay and mycelium products Mycelium overlay. Step 2 - mushroom cake covered by stroma overlay Overlay. □ Visually it is a dense snow-white layer of mycelium resembling fluffy cottony clouds. But pay attention inappropriate fruiting conditions can be a trigger for awakening genetic changes. ![]() At the fruiting stage the cultivator won't be able to influence such genetic changes in any way. □ Such mycelium can absorb nutrients, but can't produce mushroom bodies. Stroma is a dense, mat-like growth of mycelia or cushion-like aggregation of mycelium forming on the surface of composts or casings and indicative of somatic (vegetative), not generative growth. However, there are chances to fix the problem Substrate and casing layer are 100% colonized are at such a risk. Mainly it caused by prolonged mycelial growth into the casing layer. Overlay is a dense mycelial growth that covers the casing surface and shows little or no inclination to form pinheads. He admitted overlay caused by wrong fruiting conditions and stroma caused by genetic changes (inappropriate fruiting conditions could be a trigger). ![]() Cultivators don't distinguish the difference between these two definitions. The bad one - growing conditions for pinhead initiation have not been met. And there are chances to fix the problem. The good one - overlay and stroma are not contaminants. Here we are going to show you one of the most common problem in the growing process - overlay (aka stroma) and related difficulties. Sooner or later every mushroom cultivator comes across them. There are also difficulties and failures. The process of cultivation psilocybin mushrooms is not only joy and pleasure. Overlay and Stroma in Mushroom Cultivation ![]()
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