In 2016, in studies 1 and 2, plant biomass was greater for the wide rows, while lower values were recorded for the non-stay green treatment. For seed yield, in Study 1, the N fixation treatment presented the greatest yield at 64 bu/a, while the common practice was the lowest yield level at 58 bu/a. The yield gap between maximum and minimum yield values in this study was approximately of 6 bu/a (Figure 1). In Study 2, the common practice yielded the least again in addition to the no seed treatment at 57 bu/a. The yield gap from maximum (wide rows treatment) and minimum yielding treatments was 7.5 bu/a.
In 2017, yields were lower for the late planting compared with the early planting, even with the difference of 9 days in planting. Late planting did not present any significant differences in yield. However, early planting presented greater yields for the treatments of high population, N fixation, and kitchen sink. The greatest difference in productivity was between high population and common practices, with a 13 bu/a difference in yields.