Telaumbanua, Tri Yuliaman, Hamidah Hanum, and Mariati. 2026. “Interaction of Humic Acid and NPK 16:16:16 in Nature on Increased Shallot Production (Allium Cepa L. Var. Aggregatum) ”. JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) 8 (2), 701 -. https://doi.org/10.36378/juatika.v8i2.5631.