This study investigated the contributions of Cassava Multiplication Programme (CMP) technologies on the productivity of co-operative farmers in Southern Nigeria between 1999 and 2001. The CMP came into being in 1987 as a result of the International Fund for Agricultural Development's intervention in the cassava sub-sector. The decline in cassava production in late 1970's and early part of the 1980's coupled with the devastating attacks by cassava green spiderrnites (CGM) and cassava meal bugs (CM) facilitated this intervention through a loan of 12.5 Million US Dollars. This led to the development of high yield Tropical Manihot Selections (TMS).