Widiono, Fajar Kurnia Maulid, Dwi Erwin Kusbianto, Ayu Puspita Arum, and Setiyono. “Effect of Extract Type and Various Concentrations of Natural Allelopathic Substances on Inhibiting Seed Germination and Growth of Cocoa Seedlings (Theobroma Cacao L.)”. Biospecies 19, no. 1 (January 5, 2026): 1–10. Accessed April 23, 2026. https://www.online-journal.unja.ac.id/biospecies/article/view/41173.