Heryani, U. ., B. . Hidayat, and Mukhlis. “The Utilization Of Some Of Biochar To Retain N-Total In Inceptisols”. Jurnal Online Pertanian Tropik, vol. 5, no. 3, Dec. 2018, pp. 374- 381, doi:10.32734/jopt.v5i3.3103.