Corn Planting

C.O.R.N. Newsletter Articles

  1. Wet spring corn planting
    Author(s): Allen Geyer , Author(s): Peter Thomison

    The Corn Growing Degree Day decision support tool allows one to choose any Corn Belt county, enter the planting date and hybrid maturity, and generate a graph that shows projected GDD accumulations through the season, including the date on which you can expect that hybrid, planted on that date in that county, to mature (achieve black layer). One important adjustment missing from this tool is the fact that planting corn late usually lowers the GDD needed to get a hybrid from planting to maturity.

    Issue: 2019:16
  2. Author(s): Peter Thomison

    Corn GDD Tool to Identify "Safe" Hybrid Maturities for Late Planting.  Dr. Bob Nielsen at Purdue University has written an article describing a powerful decision aid, U2U Corn GDD Tool, which can be used to identify "safe" hybrid maturities for late planting. The GDD Tool is currently available for Ohio and it can estimate county-level GDD accumulations and corn development dates based on current and historical GDD data plus user-selected start dates, relative hybrid maturity ratings, GDDs to black layer, and freeze temperature threshold values.

    Issue: 2019-15
  3. Author(s): K. Nemergut , Author(s): Alexander Lindsey , Author(s): Peter Thomison

    Planting depth recommendations for Ohio are 1.5 to 2 inches deep to ensure adequate moisture uptake and seed-soil contact. Deeper planting may be recommended as the season progresses and soils become warmer and drier, however planting shallower than 1.5 inches is generally not recommended at any planting date or in any soil type. According to some field agronomists, shallow plantings increase stress and result in less developed roots, smaller stalk diameters, smaller ears and reduced yields.

    Issue: 2019-12
  4. Author(s): Peter Thomison , Author(s): Steve Culman

    As prospects for a timely start to spring planting diminish, growers need to reassess their planting strategies and consider adjustments. Since delayed planting reduces the yield potential of corn, the foremost attention should be given to management practices that will expedite crop establishment. The following are some suggestions and guidelines to consider in dealing with a late planting season.

    Issue: 2019-10
  5. Author(s): Alexander Lindsey , Author(s): Peter Thomison

    Third Author:  Emerson Nafziger

    Issue: 2019-09
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