Hans Kandel NDSU Extension Agronomist e-mail Hans.Kandel at NDSU.edu
North Dakota producers can grow various broadleaf crops. The main broadleaf crops are soybean, canola, sunflower, field pea, dry bean, sugarbeet, potatoes, flax, lentil, chickpea and several other crops.
A 4 year study was completed in which farmers provides their production information for a total of 1100 soybean fields from four seasons (2014-2017) including the final yield.
Conclusions based on the grower survey data
- Growing soybean after corn resulted in about 5 bushel higher yield compared to growing soybean after soybean. Crop rotation is important.
- An established soybean plant stand of 150,000 plants per acre is recommended.
- On average, 12.3% of planted seeds did not result in an established soybean plant.
- Planting soybean before mid-May, if conditions are favorable, provided the highest soybean yields. Delaying planting, between May 1 and June 1, based on 2014 to 2017 data, resulted in an average reduction of 0.35 bushel per acre per day.
- Selecting the latest maturing soybean adapted for your growing region may increase yields.
- Row spacing 15-22 inch provided higher yields compared with 30 inch, during the period 2014 to 2017.
- Seed treatments resulted in higher yields.
- There is a difference in yield response with different seed treatments.
- There is a positive relationship between higher established plants per acre and soil cover by the soybean crop.
- Between early season stand establishment and the end of the season soybean population, 6.3% of the soybean plants died.