Delayed Planting Advice for Corn, Soybeans

May 27, 2011 10:03 AM

Even with all of the planting progress made in many parts of the Midwest, some states are still way behind. If you haven’t been able to plant corn or soybeans yet, you probably realize the needs of crops planted in June are different than those planted in April.

The Purdue Extension Field Crops team presented a webinar Friday, May 27 to answer questions related to delayed planting. The webinar will be archived online at Purdue’s Chat ‘n Chew Café.
This year, corn planting in states such as Indiana and Ohio is one of the slowest in the last 20 years. “The bottom line is we know we are delayed,” says Bob Nielsen, Purdue Extension corn specialist.
Nielsen reminds planting date is only one of many factors that contribute to yield. But this late, planting date becomes a bigger factor.
Here are some late-planting tips for corn:
  • The target plant population is the same whether you’re planting in April or June. But, the seeding rate may differ when you are planting late to get that target plant population.
  • Consider doing shallow, vertical tillage on unplanted fields. There’s a huge advantage to break up the compacted and uneven levels of residue.
  • Any secondary tillage work should be done as shallow as possible.
  • If switching to earlier hybrid maturities, make your choices based on disease resistance, Bt-corn borer and yield potential.
Shaun Casteel, Purdue Extension soybean specialist, says since soybean planting is also delayed, producers need to make several decisions.
His overall advice for late-planted soybeans:
  • Increase seeding rates 10% to 20% to promote canopy closure and increase pod height. We are at a point where we should at least increase seeding rate by 10%.
  • Plant narrow rows, 15 inches or less
Since many agronomic decisions need to be made based on a farmer’s location, Purue has compiled a “Late Planting of Corn and Soybean Crops,” site, which features news and updates from several universities. Topics include planting dates, crop insurance, nitrogen issues and weed control.

Other Resources

The Ohio State University C.O.R.N. Resource Center
Purdue University’s Chat ‘n Chew Café


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