Abstract Background Soybean is one of the most important crops planted in Brazil. The management of weeds becomes necessary, in this case the horseweed (Conyza spp.), because the lack of control is responsible for a significant reduction in production. No-tillage in the main straw system used in soybean crops and with the prohibition of the herbicide paraquat, used in the pre-planting of the crop in Rio Grande do Sul, efficient alternatives to this management were evaluated. Objective The objective of […]