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Success is most likely in >2,900 CHU regions, but an early summer harvest can open the door for shorter-season areas as well.
- Plant as early as possible after harvest – yield potential drops off significantly with each day of delay.
- Target planting before July 20 for your best chance at success.
- Consider harvesting winter wheat slightly early at 19–22% moisture and drying to gain a few extra days.
- Seed deeper than normal – with warm soil temps, soybeans can go 2–3 inches deep and still germinate well. Plant into moisture.
- No-till helps retain soil moisture and reduces input costs.
- Choose herbicide-traited varieties for simple and affordable weed control.
- Plant in narrow rows (7.5″) and choose tall varieties to speed canopy closure. Yield is maximized when canopy closes by R1.
- Select a variety 1–2 RM (200–400 CHU) shorter than your normal adapted soybean. Syngenta research (2012–2013) found no yield advantage to longer-maturity varieties in double crop – and harvest moisture was significantly higher in later-maturing varieties.
- Increase seeding rates by 30–50% – target 200,000–300,000 seeds/acre depending on timing and CHU zone.
Image Source:
https://www.dtnpf.com/agriculture/web/ag/blogs/production-blog/blog-post/2016/06/24/double-beans



