ABSTRACT This experiment was conducted at the Teaching and Research Farm of Federal University of Technology Akure, to determine influence of variety, stem age and portion on growth and stem yield of cassava. The experiment was a 3 by 2 by 3 factorial in a Randomized Complete Block Design with three replications. Stems of three different ages (12 months, 9 months and 6 months) of two portions (hard wood and semi-hard wood) from the three varieties (TMEB419, TMEB693 and I011371) were used...