Close-up view of severe violet root rot on a carrot. Note the fan-like hyphae of the pathogen, Rhizoctonia crocorum, growing on the root surface.

Close-up view of severe violet root rot on a carrot. Note the fan-like hyphae of the pathogen, Rhizoctonia crocorum, growing on the root surface.

Photo Source: Lindsey du Toit, Washington State University