The rustPuccinia canaliculata(Schw.) Lagerh. is a potentially important component of integrated weed management systems (IWMS) for the control ofCyperus esculentusL (yellow nutsedge). The effect ofP. canaliculataandP. canaliculatain combination with the herbicides imazaquin, glyphosate, paraquat, bentazon, or metribuzin, on C.esculentusreproductive and growth parameters, are reported. Significant rust‐herbicide interaction was demonstrated for bentazon, imazaquin, and metribuzin.