Bacterial Contamination (Wet Spot/Bacillus)
Bacillus spp.
Manifests as dull gray to mucus-like slime on grain, with a strong sour smell. On fruiting mushrooms, Pseudomonas causes yellow-to-brown superficial lesions (bacterial blotch).
Visual Identification
Dull gray, wet, slimy-looking grain kernels. May appear glassy or translucent. Sometimes has a mucus-like coating.
Not Treatable
Discard affected material immediately.
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