Rhizoctonia solani
fusion site die. To complicate matters further, subgroups can be distinguished within AG’s. The different AG’s are more or less specific to the pathogenicity [...] known as Rhizoctonia solani , the vegetative stage. It was long believed to be a sterile fungus, but recently it was discovered that the fungus produces [...] the diseased areas, sclerotia can be seen, but they vary in size and colour and are therefore not a good feature to determine the cause of the disease