- Utami, Sri Nuryani Hidayah., Indrawati, Uray Suci Yulies Vitri. (2023) Oil palm empty fruit bunch biochar fertilizer as a solution to increasing the fertility of peat soil for sustainable agriculture. IJROWA, 13(1):1-11. https://doi.org/10.57647/j.ijrowa.2024.1301.03