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Learning resources to pass this quiz: Mycogone contamination aka wet bubble disease
Questions covered in this Quiz
Main symptoms of Mycogone contamination - Click on all the symptoms of Wet Bubble disease:
Possible answers:
- A watery, yellowish-brown, odorless liquid on the mycelium
- Amber slimy liquid that oozes from pins and mycelium
- Crust like layer on mycelium and mushroom pins
- Porous coral-like indentations
- White powder coating that later turns gray color
- Wart-like growths and deformed blobs
- Dry brown cracks and necrotic dry lesion on pins
- Rotten smell
- White coating on the early stage
- Grayish coating on the early stage
Vector of Mycogone contamination - What is considered the MAIN cause of Mycogone contamination in mushroom cultivation?
Possible answers:
- Insects
- Grower's clothes and hands without gloves
- Spreading spores by air
- Bulk and Casing substrate
- Unsanitized tools
- Contaminated genetics – spore print/syringe/swab or liquid culture
Mycogone incubation period - If you notice the first signs of mycogone infection during the first flush of fruiting, this means:
Possible answers:
- Mycogone has begun to spread as it prefers fresh alkaline substrate
- Mycogone spores were introduced during fresh air exchange at the very beginning of fruiting period
- Mycogone spores were introduced with the bulk substrate
- Mycogone started to grow due to stagnant air and poor ventilation in a monotub
Wet Bubble disease and Flush of fruiting period - If you spot first signs of Mycogone contamination on the 2-nd or 3-rd flush of fruiting it means:
Possible answers:
- The substrate became more acidic after the first flush, so the Mycogone began to grow and spread later
- Mycogone always appear later – on 2nd-3rd flushes
- Mycogone spores were introduced with bulk substrate, but they propagate only on the 2nd-3rd flush.
- Mycogone spores were introduced by air during fruiting period, not from the bulk substrate
Mycogone prevention - What are possible Mycogone prevention methods?
Possible answers:
- Proper substrate pasteurization or sterilization.
- Mycogone is highly resilient contaminant. There is no way to prevent it, it survive even after pasteurization
- Only substrate sterilization in autoclave or presssure cooker is effective.
- Sprinkle the top layer with bleach - Chlorinated water solution 150-250 ppm - for preventing Mycogone spores germination
Mycogone treatment - What is the safest Mycogone treatment method for early small contaminated area?
Possible answers:
- No way to treat Mycogone, even for small areas
- Only fungicides can be used - Carbendazim, Chlorothalonil, Prochloraz Manganese complex 0,1%
- Salt/soda application & Chlorinated water 150-250 ppm
- A spray of Formalin 0,8%
- A spray of Benomyl 0,1%
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