Musthofa, N., Mustamu, N. E., Sitanggang, K. D. and Triyanto, Y. (2025) “Optimizing The Growth of Corn Plant (Zea mays L) Local Variety of North Sumatera, which has been Irradiated with Gamma-Rays M1 with Urea Fertilizer Application ”, JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA), 7(1), pp. 349 -. doi: 10.36378/juatika.v7i1.4233.