The aim of this study was to evaluate the efficacy of metolachlor (2.4 kg a.i. ha-1) and fomesafen (0.225 kg a.i. ha-1) applied via a center pivot on weed control in the common bean plant (Phaseolus vulgaris). The cultivar Pérola was sown in July (winter). Metolachlor was applied with water volume of 5, 10, and 15 mm, and fomesafen with 3, 6, and 9 mm. The herbicides were also sprayed. Two checks were included: with and without weeds. The predominant weed in the no-till system was Bidens pilosa and in the conventional tillage, Artemisia verlotorum. In general, herbigation was more efficient than spray for weed control, regardless of the type of tillage system. Water volume of 5 or 10 mm for metolachlor, and 3 or 6 mm for fomesafen, yielded the best results, overall.
herbigation; herbicides; weed control; tillage systems
