Abstract Background In the largest areas and greater technification of the sweet potato production system, weeds are controlled with herbicides. However, there are only two herbicides registered for the crop in Brazil. Objective The aim of this study was to evaluate the selectivity of different herbicides for the sweet potatoes crop, depending on the genotype and dosage of each product. Methods Two experiments were carried out under field conditions, with the Canadense and Brazlândia Roxa cultivars, one for each cultivar. […]