Hayyat, M.S. et al. 2023. Estimation of the economic threshold of Leptochloa chinensis (Chinese sprangletop) in direct-seeded fine grain rice (Oryza sativa) . Semina: Ciências Agrárias. 44, 2 (Jun. 2023), 803–822. DOI:https://doi.org/10.5433/1679-0359.2023v44n2p803.