Applying organic fertilizer in cassava (Manihot esculenta) – mungbean (Vigna radiata) intercropped to improve dryland productivityEka Widiastuti, Baiq Tri Ratna Erawati, Awaludin Hipi and Fitria ZulhaedarE3S Web Conf., 306 (2021) 04017DOI: https://doi.org/10.1051/e3sconf/202130604017