Corn Growth and Development

C.O.R.N. Newsletter Articles

  1. Corn Maturity

    Corn at Vegetative Stages in August, will it Make it Safely to Maturity?

    Author(s): Osler Ortez , Author(s): Greg LaBarge, CPAg/CCA

    Early wet conditions caused significant delays in planting dates across the state. Additional issues such as poor crop establishment also led to replanting in some areas. A tour of Ohio’s corn crop during the first half of August found that some corn fields were still in vegetative stages.

    Issue: 2022-28

  2. Other Corn Ear Abnormalities – when and why do they develop?

    Author(s): Osler Ortez

    Despite many corn acres having reached tasseling, other corn acres are still in rapidly growing stages, mid to late vegetative. Any adverse conditions can still affect the crop through or prior to harvest. Arrested ears’ occurrence was discussed two weeks ago.

    Issue: 2022-24

  3. Crop Water Use in Corn – What Do We Know?

    Author(s): Osler Ortez , Author(s): Alexander Lindsey , Author(s): Greg LaBarge, CPAg/CCA

    When traveling across the state, many corn fields show well-developed tassels. Hopefully, closer field inspection also finds emerged silks that are needed to pollinate ovules on the developing ears (Figure 1). On July 10, USDA reported 7% of the Ohio Corn silking. In the July 18 report, the percentage of silked corn fields is expected to be much higher as a lot of crop progress can occur in a week if adequate conditions exist (e.g., water, temperatures).

    Issue: 2022-23

  4. Arrested Ear Development in Corn – How to avoid them?

    Author(s): Osler Ortez

    The crop season in Ohio is rapidly gaining progress. Depending on planting dates and hybrid relative maturities corn crop can be anywhere between early vegetative and up to tasseling. However, a vast majority of the crop is expected to be around the mid-to-late vegetative stages (Figure 1).

    Issue: 2022-22

  5. Strong Storms and Downed Corn – How will this affect yield?

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

    Strong storms the week of July 4th have led to some downed corn fields in parts of the state. Much of the yield penalty in corn is dependent on the stage the corn was at the time of the storm, as well as if the damage is root lodging (plants tipped over but stalk is intact) or stalk damage (greensnap/ brittlesnap or bent) (Fig. 1). Root lodging is easier for plants to recover from and will lead to less yield loss than stalk damage if occurring at the same rate.

    Issue: 2022-22
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