Wild cassava is cheap and unconventional feedstocks, which can be use for bioenergy production. Characteristics and usability of wild cassava (Manihot glaziovii) for bioethanol production has been reported in our previous study (19). The wild cassava M. glazioviihas many advantages as bioenergy crop. It is very hardy, a fast grower, free from insect and fungi attacks, requires little or no attention once established and thrives in poor, dry and rocky soils unsuited to almost other crops (20). Moreover, the types recently found in Tanzania possess big tubers with high content of readily degradable carbohydrates that are up to 89% of dry matter. Besides, it is inedible because it is presumed to contain fibrous roots and is very bitter compared to the domesticated cassava,Manihot esculentum(19).