Faccini, D. E., & Nisenshon, L. (1994). Populational dynamics of pigweed (Amaranthus quitensis H.B.K.) effects of the chemical and mechanical treatments in a soybean plantation. Pesquisa Agropecuaria Brasileira, 29(1), 01-91. https://doi.org/10.1590/S1678-3921.pab1994.v29.4024