EFFECT OF GIBBERELLIC ACID ON GROWTH, TUBER YIELD AND QUALITY IN POTATOES (Solanum tuberosum L.)

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). applications potato varied. resulted significant decrease chlorophyll content (SPAD), dry matter chips But it caused increase number tubers plant-1. In 2019 2020 years, highest obtained from cultivar (62.78 50.55 t ha-1 respectively). Total values increased 52.08 t/ha 65.14 42.12 53.94 increasing L-1 0 mgL-1. Overall, reduction starch ratio. deformations shape, doses.