Four herbicides were tested ot control weeds in snap bean (Phascolus vulgarisL.) cultures, in pre-emergent conditions. EPTC and Irifluralin were incorporated before, whereas cloroxuron and DNBP after planting, but without incorporation iu the soil. A plot was cultivated by usual practices as check. Under the conditions of this experiment, there was no appreciable increase in the bean yield, but all the herbicides tested were efficacious in controlling the weeds. Those applied after planting showed better residual effects. Some toxicity of cloroxuron on snap beans was noted.