Sclerotinia Rot or White mold: Sclerotinia sclerotiorum
Symptoms
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Carrots may show little or no damage incidence in the field but following washing and storage white mold outbreaks often occur on the stored roots.
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Only a small percentage of the roots may be initially infected but the fungus mycelium can move very rapidly from carrot to carrot.
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In a matter of weeks the whole storage container may become a mass of white mold and black sclerotia surrounding each and every carrot.
Management
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Frequent inspection in storage, low temperatures, aeration and washing in a final water of 2-5 % diluted bleach solution may give adequate control (1 part bleach, (sodium hypochlorite) to 20 parts water.
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