Trial Type
Seeding Rate/ Varieties/ Row Spacing, Medium Yield
General Stats
Soil Stats
Methodology
Methodology:
Four strips were planted at 110,000 seeds/acre, which were compared to the farmer’s normal rate of 140,000 seeds/acre.
Results
Results:
Overall, yield loss at the 110,000 seeds/acre reduced seeding rate wasn’t significant. To be significant the average yield change across the 4 strips needed to be +/- 3.36 bushels/acre, which was not met at -1.16 bushels. It’s important to note that reduced seeding rate had decreased yields in the Ws soil type area, and increased yields in the WhA soil type. Therefore the 110,000 seeding rate appeared to increase yield in some areas and decrease yields in others, but the average yield change across the strips, was not significant for the medium yielding soybeans. These results show the potential for variable seeding rates in SD soybean production.
Acknowledgments:
Funding provided by South Dakota Soybean Research and Promotion Council.