Final diagnosis


Rhizoctonia crocorum (Violet root rot)

Tuber infected by violet root rot (<b><i>Rhizoctonia crocorum</b></i>), bearing purplish mycelium hypha and evolving into rot.
Tuber infected by violet root rot (<b><i>Rhizoctonia crocorum</b></i>), bearing purplish mycelium hypha and evolving into rot.
External rot in potato tuber reached violet root rot (<i><b>Rhizoctonia crocorum</i></b>)
Tuber infected by violet root rot (<b><i>Rhizoctonia crocorum</b></i>), bearing purplish mycelium hypha and evolving into rot.
Tuber infected by violet root rot (<b><i>Rhizoctonia crocorum</b></i>), bearing purplish mycelium hypha and evolving into rot.
Small black sclerotia (<i><b>Rhizoctonia crocorum</i></b>) on tuber.
Internal root (<i><b>Rhizoctonia crocorum</i></b>)