Aprilliansyah, M.C., Mustamu, N.E., Saragih, S.H.Y. and Sitanggang, K.D. 2025. Growth Improvement Corn Plant (Zea mays L.) F1 Local Variety of North Sumatera which has under Light Irradiation Gamma using NPK Mutiara Fertilizer . JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA). 7, 1 (Jan. 2025), 344 -. DOI:https://doi.org/10.36378/juatika.v7i1.4232.