“…In soybean crop, the average management costs with glyphosate‐resistant sourgrass are 150% higher and situations worsen with co‐existing sourgrass and fleabane populations (Adegas et al., 2017). Glyphosate‐resistant sourgrass is primarily controlled with acetyl‐CoA carboxylase (ACCase)‐inhibiting herbicide (Correia, Acra, & Balieiro, 2015; Gilo, Mendonça, Santo, & Teodoro, 2016), whereas fleabane is controlled by 2,4‐Dichlorophenoxyacetic acid‐N‐methylmethanamine (2,4‐D) (Kumar, Jha, & Jhala, 2017; Osipe, Oliveira, Constantin, Takano, & Biffe, 2017; Santos et al., 2015). However, a little is known about the efficacy of sequential or tank‐mix application of these herbicides to control coexisting fleabane and sourgrass populations.…”