Abstract: Farmers have reported difficulty in controlling Ambrosia sp., observing uncontrolled plants in soybean fields even after post-emergence glyphosate application. The aim of this study was to evaluate the response of Ambrosia sp.to different rates of the herbicide glyphosate. The experiment was conducted in duplicate in a greenhouse at the Federal University of Santa Catarina, Curitibanos campus, between September and December 2022, using a completely randomized design with four replications. The treatments consisted of the application of nine increasing rates […]