Corn Growth and Development

C.O.R.N. Newsletter Articles

  1. Corn Pollination

    Author(s): Alexander Lindsey

    As temperatures remain hot for much of the state, corn continues to put on leaf collars and is approaching the start of flowering. Corn is a plant that has separate male (anthers on the tassel) and female (silks in the ear) flowers, and it is critical that the timing of flower emergence and activity overlap (sometimes referred to as the ‘nicking’ period) to ensure good pollination and kernel set. Another term used for flowering synchrony is the ‘anthesis-silking interval,’ which is the time from pollen shedding to silk emergence.

    Issue: 2020-22

  2. Corn Growth in Hot and Dry Conditions

    Author(s): Alexander Lindsey , Author(s): Peter Thomison

    In recent days we have been experiencing 90 degree F days with limited precipitation, and so we are starting to see some leaf rolling in corn. Some of this may be related to reductions in soil moisture, but may be related to restricted root systems as well. Depending on the stage of corn at the time of these conditions, different effects on yield may be expected. Corn ear development occurs throughout the growing season, and extreme temperature or moisture stress at different growth stages will decrease different aspects of grain yield.

    Issue: 2020-21

  3. Tip Dieback and Zipper Ears in Corn

    Author(s): Peter Thomison , Author(s): Allen Geyer , Author(s): Bruce Ackley

    Alyssa Lamb, and Alison Peart

    Issue: 2018-28
  4. Photo credit https://www.youtube.com/watch?v=SP2JyJOFmRk

    Impact of ponding and saturated soils on corn

    Author(s): Peter Thomison , Author(s): Alexander Lindsey

    Persistent rains during the past two weeks have resulted in ponding and saturated soils in many Ohio corn fields and led to questions concerning what impact these conditions will have on corn performance.

    Issue: 2018-19
  5. Early Corn Coloration – Green, Purple, or Yellow?

    Early Corn Coloration – Green, Purple, or Yellow?

    Author(s): Alexander Lindsey , Author(s): Steve Culman , Author(s): Peter Thomison

    Corn seedlings often turn yellow (due to low nitrogen uptake and/or limited chlorophyll synthesis) or purple (reduced root development and/or increased anthocyanin production) under cool, wet conditions. Some hybrids are more likely to increase anthocyanin (purple pigment) content when plants are cool. Yellowing or purpling of corn plants at this stage of development generally has little or no effect on later crop performance or yield potential.

    Issue: 2018-16
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