Fungal Organisms Associated with Yam (Dioscorea rotundata, Poir) Rot at Owerri, Imo State of Nigeria

Pathological investigations were carried out at Owerri, Imo State, Nigeria to find out the fungal organisms associated with yam rot. The following organisms were isolated and identified as Fusarium oxysporium Schlech ex. Fr., Rhizopus oryzae Went, Botryodiplodia theobromae Pat. and Fusarium solani Mart Sacc. Pathogenicity test carried out confirmed these organisms as the pathological agents of the yam rot.