The Agronomists, Ep 69: Dave Hooker and Laura Schmidt on early soybean emergence

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After a week off for Victoria Day (and host Lyndsey Smith busy caring for lambs), we’re back!

This episode of The Agronomists — brought to you by the Pest & Predators podcast, RealAg Radio, and ADAMA Canada — features Dr. Dave Hooker, associate professor at the University of Guelph-Ridgetown, and Laura Schmidt, production specialist with the Manitoba Soybean and Pulse Growers.

The trio discusses early soybean (and maybe even a little corn) emergence questions.

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SUMMARY:

  • Are we allowed to panic on June 1, as parts of Manitoba just get going with seeding?
  • Stand assessment is super critical
  • Well sown is half grown
  • The dreaded replant…it didn’t even take Dr. Dave 15 minutes to get into it! But hey, it’s a key point. Consider yield potential.
  • Net returns vs. final plant stand. Check out the fascinating graph at the 15 minute mark
  • In Manitoba there are tonnes of soybeans that go in with the planter, but there are a lot of acres that go in the ground with drills, too
  • Can we float soybeans? Sometimes you may be better to actually choose a different crop. Getting that seed in the ground is incredibly important
  • Parts of central Manitoba are really concerned as to whether it is too late to put in soybeans. Don’t lose hope yet, says Schmidt

CLIP 1: Soybean School: Assessing stand establishment 30 days after emergence

  • Schmidt brought props! She apologizes for them…but honestly, we’re here for it
  • When do we switch to 7.5 inch rows? Anytime after mid-June, likely. If you do wider rows after that, there’s a good chance you’ll see a significant yield penalty.
  • As we push soybeans later…should we switch to a different variety? How do you make that call? What goes into making that decision? Spoiler alert: soybeans are quite different than corn in this situation.
  • There’s some varieties that branch much better than other varieties, so watch out on your row spacing

CLIP 2: Soybean School West: Checking for root rots and seedling diseases

  • Seed treatments are good for 2-3 weeks
  • We have a root rot for every temperature
  • We really want to protect those seedlings as much as we can
  • Chocolate spot may sound delicious…but it’s not
  • There are plenty of fields that are severely impacted by root rots
  • If you’re a pulse grower, you’ve likely heard of aphanomyces. Guess what, your soybeans are resistant!
  • When is the ideal time to roll your soybeans? This significantly depends on the moisture conditions
  • Watch for breakage with post-emergent rolling
  • Address the doubles and triples, but don’t obsess about them
  • Developmental delays are way more important

Other Episodes

The Agronomists (view all)Season 3 (2022) Episode 25
Episodes:

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