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Agronomic Crops Network

Ohio State University Extension

CFAES

Corn Growth and Development

C.O.R.N. Newsletter Articles

  1. Maturing Corn

    Dry Conditions in Corn & Stalk Quality Concerns

    Author(s): Osler Ortez , Author(s): Pierce Paul , Author(s): Stephanie Karhoff, CCA , Author(s): Jason Hartschuh, CCA

    The 2024 crop season has brought extended periods of dry weather for many parts of Ohio, mostly affecting corn during the grain fill stages. Among the many negative effects of dry weather, corn stalk quality can be compromised. Crop stress conditions increase the potential for stalk lodging (Figure 1). For instance, corn stalk rot, and consequently, lodging, are the results of several different but interrelated factors.

    Issue: 2024-31
  2. Corn Ear

    ANR Factsheet for tracking Growing Degree Days in Corn

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

    Because of differences in the growing season for corn across Ohio, practitioners need a method of accurately rating crop’s maturity to inform crop management decisions for adequate yield, quality, and grain moisture at harvest. For this reason, we rate hybrid maturity based on “Growing Degree Days” (GDD), or heat units. Because a corn hybrid requires a specific number of GDD to reach maturity—a number that is independent of the crop’s total number of growing calendar days—the GDD method is accurate and should be considered by today’s practitioners.

    Issue: 2023-41

  3. Corn Yield Forecasts as of August 23, 2023

    Author(s): Osler Ortez

    Most of the corn acreage in Ohio is now at grain filling stages.

    Issue: 2023-29

  4. Battle for the Belt: Episode 24

    Author(s): Taylor Dill , Author(s): Laura Lindsey , Author(s): Osler Ortez

    Episode 24 of Battle for the Belt is now available: https://www.youtube.com/watch?v=WO3o-o9ySQQ

    In Episode 24, we go to each research location with Taylor Dill and conduct yield estimates on corn. Taylor is a graduate student in the department of Horticulture and Crop science at Ohio State University.

    Yield Estimation

    Issue: 2023-28

  5. Corn Yield Forecasts as of August 2, 2023

    Author(s): Osler Ortez

    Most of the corn acreage in Ohio now should have reached the silking stage, except for delayed planting conditions. Some fields have already transitioned to dough and milk stages. A new simulation of 2023 end-of-season corn yield potential and crop staging was performed on August 2, using the UNL Hybrid-Maize crop model in collaboration with faculty and extension educators from 10 universities.

    Issue: 2023-26
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