Field experiments were conducted from 1992 to 1994 in southern Manitoba to investigate the tolerance of buckwheat, canola, field pea and lentil to simulated imazamethabenz spray drift. Imazamethabenz was applied at 0, 7.5, 15, 30, 60 and 120 g a.i. ha−1 2 wk after crop emergence when buckwheat and canola were in the two- to three-leaf stage and lentil and field pea vine length was 10 cm. Application rates corresponded to 0, 1.6, 3.1, 6.3, 12.5 and 25% of the recommended field rate for control of wild oat (482 g a.i. ha−1). At the dosages examined, buckwheat and canola leaf area index 2 and 4 wk after treatment, seed yield and thousand seed weight were unaffected. Lentil and field pea were severely injured by 60–120 g a.i. ha−1 of imazamethabenz. Injury consisted of foliar chlorosis, stunting, increased basal branching and delayed maturity. Field pea and lentil yields were reduced only at 60–120 a.i. ha−1 of imazamethabenz. At these rates, yield losses were 27–59% and 25–76% for lentil and field pea, respectively. Yield losses differed among years, with the highest percentage yield losses occurring under cold, wet growing conditions. Key words: Buckwheat (tame), canola, pea (field), lentil, spray drift, sublethal rates