Tag: sclerotia
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Question of the Week – Sclerotia
What are the black structures developing inside the stem of this dying bupleurum? These black structures are sclerotia, which are signs of the disease sclerotinia stem rot, and resting structures for the pathogen, Sclerotinia sclerotiorum. Sclerotia are hardened masses of mycelia, which enable the fungus to survive environmental stresses, such as a lack of a suitable…
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White Mold is Active so Spray Now
From Clemson Plant Pathologist Tony Keinath and Extension Associate Justin Ballew The freezing weather the week of January 21, 2025, was just what the Sclerotinia white mold fungus was waiting for. While cold temperatures discourage most animals from being active, freezing temperatures trigger Sclerotinia sclerotia (the survival structures in soil) to germinate, produce tiny mushrooms,…
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Cottony Rot on Stored Carrots
From Clemson Plant Pathologist Tony Keinath. Stored carrots can rot if they are infected by one of several different fungi in the field. Among the culprits is Sclerotinia, typically known as white mold on beans, Sclerotinia stem rot and watery soft rot on brassicas, or timber rot on tomato. On carrot, the same disease is…
The South Carolina Grower 