Bachri, S., Subakti, H.D., Putri, S.A.M. and Tjirosemito, S. 2023. Competition Study of Cowpea (Vigna unguiculata L. Walp) and Bidens pilosa L. Using Replacement Series Approach. BIODIVERS - BIOTROP Science Magazine. 2, 1 (Jan. 2023), 55–63. DOI:https://doi.org/10.56060/bdv.2023.2.1.1996.