Watery soft rot

Watery soft rot caused by S. sclerotiorum and S. minor often develops on tubers that appear sound at harvest but subsequently succumb in storage (Gaudineau and Lafon, 1958). The tubers become covered with a dense white mycelium and irregular sclerotia, which progress from white to dark brown or black. Though storage at low temperatures repressed development, S. sclerotiorum can cause serious losses at low temperature (Johnson, 1931). 

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