Rhizoctonia solani
Brown rhizoctonia, also known as " black rhizoctonia ", " tuber pox " or " cuff disease ", is a fungal disease that affects various cultivated plants including beetroot and potatoes, as well as carrots, chicory, lettuce and chicory, and is caused by a basidiomycete fungus, Rhizoctonia solani Kühn.
This cosmopolitan fungus, whose teleomorph is Thanatephorus cucumeris, has a wide range of hosts. It is one of the causes of damping-off.
In potato crops, damage is characterised by failure to emerge, delayed tuberisation, reduced yields and a drop in the value of the harvest if there is a high presence of sclerotia on the tubers.()
Annexes
S'attaque aux cultures