Yeni Noviana, Meiriani, T. Irmansyah. Robusta Coffee (Coffea robusta L.) seed germination response in various plant natural growth regulators with soaking duration. Petrop [Internet]. 2022 Mar. 3 [cited 2026 Jul. 28];8(3):195-202. Available from: https://idjpcr.usu.ac.id/jpt/article/view/5358