“THE EFFECT OF GIVING BIOCHAR OF OIL PALM EMPTY FRUIT BUNCHES ON THE GROWTH OF PEPPER CUTTINGS IN THE ULTISOL SUBSOIL LAYER”. Journal of Agro Plantation (JAP), vol. 1, no. 2, Oct. 2022, pp. 62-73, https://doi.org/10.58466/jap.v1i2.1241.