Field experiment was conducted during the 2019 cropping season at a community based demonstration farm Kwodom, Yamaltu Deba Local Government Area of Gombe State, Nigeria, on evaluation of the efficacy of different concentration of super gro (Bio-fertilizer) and maize variety on productivity of maize (Zea mays L-). The treatments consisted of three different concentration of supergro (bio-fertilizer) 50ML, 100ML and 150ML and three varieties of maize which are; SAMMAZ17 (V1), SAMMAZ25 (V2) and SAMMAZ34 (V3). The experiment was laid out in a split plot design with three treatments of supergro (bio-fertilizer) 50, 100 and 150 ml/litres of clean water assigned to the main plot while the three maize varieties were assigned to the subplots; these were replicated three times. Data were collected on growth and yield attributes of maize plant. Data collected were analysed using analysis of variance (ANOVA) and treatment means compared with least significant difference at 5% probability level. 150ml recorded the tallest plant height followed by 100ml and SAMMAZ17 followed by SAMMAZ34 respectively.