Growers want tall soybeans that canopy over the row and have lots of nodes and a few lower branches to produce a lot of pods. Plant these same varieties in Illinois prairie soils and they grow 5 feet tall and begin to lodge with some corresponding yield loss. And the varieties we grow today were largely developed and tested under 30-inch row spacing and still perform best in that 20- to 30-inch spacing.
Dr. Richard Cooper, retired...