Many research reports have documented greater weed control in narrow row soybeans as compared to wide row soybeans. For example, Young et al. (2001) reported greater giant foxtail, waterhemp, and velvetleaf control in many experiments where 7.5-, 15-, and 30-inch row spacings were compared (Table 1). In their experiments, they included several rates and two timings of glyphosate and two conventional herbic ide programs. The experiments were conducted for three years at two locations in Illinois and for two years at another location in Illinois.