Problem Identification:
From the image, the oyster mushroom substrate appears to have:
Black Mold Contamination – Dark black spots indicate mold growth.
Mycelial Abnormalities – The white, deformed mycelium suggests poor colonization or stress.
Excess Moisture – The substrate looks overly wet, which can lead to contamination and poor mushroom growth.
Causes:
High Humidity & Poor Ventilation – Excess moisture and lack of airflow promote mold growth.
Contaminated Spawn or Substrate – Using low-quality or infected spawn can introduce mold.
Improper Sterilization or Pasteurization – If the substrate was not properly treated, unwanted mold spores may have survived.
Overwatering – Excess moisture encourages mold and bacteria.
Solutions & Prevention:
✅ Improve Ventilation: Ensure proper airflow to reduce excess humidity.
✅ Lower Humidity: Keep humidity between 75-85% to prevent mold growth.
✅ Use High-Quality Spawn: Always source spawn from a trusted supplier.
✅ Proper Sterilization: Pasteurize substrate at 60-70°C for 4-6 hours to kill contaminants.
✅ Remove Infected Bags Immediately: If a bag is heavily infected, discard it to prevent the spread of mold.
✅ Use Lime or Hydrogen Peroxide: Spray diluted hydrogen peroxide (0.5-1%) on affected areas to slow mold growth.
✅ Monitor Moisture Levels: Substrate should be moist but not soggy.
Narendra Modi
Sidhartha Gupta
"Microfungi - the Mushroom Expert"
Microfungi Mushroom Wala
MICROFUNGI MUSHROOM RESEARCH & DEVELOPMENTS WELFARE TRUST
Microfungi's School of Mushrooms & Fungi
Oystocure
