By Eric Jones and Philip Rozeboom et.al
Herbicides are a staple tactic in soybean weed management programs. While strong pre- and postemergence programs utilizing multiple herbicide groups in each application will result in effective weed management, a cultural tactic such as row spacing can result in a complementary increase in effectiveness.
Investigating Row Spacing
Research being conducted by the SDSU Extension Weed Science program is investigating the effective of row spacing (30” vs. 15”) on weed management with a strong, effective herbicide program. Fierce EZ (premixture of Valor [flumioxazin] and Zidua [pyroxasulfone]) was applied at planting followed by Enlist One (2,4-D choline) + Liberty (glufosinate) when weeds were approximately 6” in height.
Source : sdstate.edu