Fresh root yield
Significant differences (p < 0.05) in fresh root yields were observed between genotypes with Afebankye giving the highest fresh root yield and Sisipe 290 the lowest (Table 2). The root yields observed for Debor, Afisafi, Tuaka, Afebankye were not significantly (p > 0.05) different, but were all significantly (p < 0.05) higher than in Sisipe 290. Fertilization resulted in higher root yields in the fertilized plots than the control. This observation supports the