Growing 100 bushel soybeans in South Dakota
Row spacing and seeding rates can impact yield. University research on small plots suggests that reducing row spacing increases yields by as much as 20 bushels/acre. However, as part of this project, on-farm research was conducted with soybean producers, with results indicating the differences in yield may not be as large as anticipated. Some on farm research in 2011 showed only a 2 bushel/acre difference between narrow 10 inch rows and 30 inch rows. Additional on-farm research was conducted in 2012. Final analysis is still in process, but data indicated that seed treatment (fungicide and insecticide) response correlates with planting date. That is, the earlier the planting date (late April to early May), the more likely that a seed treatment will provide a positive yield response. Late planting (late May) seems to not show a significant response to seed treatments.
These and other practices to increase yield will be shared with producers through the Best Management Practices of Soybean Production, as a final product from this research. Planned for full publication in spring 2013, the book and presentations at the Soy 100 meeting will provide producers with many methods of increasing overall yield and profitability. Click here to download the full report.
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