Kieu, C. V., & Ho, L. T. (2025). Allelopathic potential of yellow cosmos (Cosmos sulphureus) and royal poinciana (Delonix regia) on weedy rice (Oryza sativa f. spontanea WR20). CTU Journal of Innovation and Sustainable Development , 17(1), 135-143. https://doi.org/10.22144/ctujoisd.2025.029