The purpose of this study was to determine the effects different doses gibberellic acid (GA3) on growth, tuber yield and some quality traits potato. experiment arranged in a split-plot design with three replicates, cultivars Marabel, Alegria Agria were main plots, GA3 (0, 25, 50 100 mg L-1) sub-plots. Gibberellic applied leaves by spraying 50th day after planting (during flowering). application...