Sopian, M., Nurmayulis, Sodiq, A.H. and Rumbiak, J.E.R. 2023. Optimal growth conditions for avocado (Persea americana Mill.) seedlings using biofertilizer-based approach with biosurfactant diethanolamide palm olein and neem extract. Jurnal Ilmiah Pertanian. 20, 3 (Dec. 2023), 258-270. DOI:https://doi.org/10.31849/jip.v20i3.16276.