Corn Harvest

C.O.R.N. Newsletter Articles

  1. Harvest Delays Impact Corn Performance

    Author(s): Peter Thomison , Author(s): Allen Geyer , Author(s): Rich Minyo

    Leaving corn to dry in the field exposes a crop to unfavorable weather conditions, as well as wildlife damage. A crop with weak plant integrity is more vulnerable to yield losses from stalk lodging and ear drop when weathering conditions occur. Additional losses may occur when ear rots reduce grain quality and can lead to significant dockage when the grain is marketed. Some ear rots produce mycotoxins, which may cause major health problems if fed to livestock.

    Issue: 2018-35

  2. Premature Sprouting of Corn Kernels

    Author(s): Pierce Paul , Author(s): Peter Thomison

    We have received several reports of premature corn kernel sprouting across Ohio. The ear in the picture exhibiting premature sprouting was sampled from one of the Ohio Corn Performance Test plots at the NW Research Station and was associated Trichoderma ear rot. In this particular case, the fungus that causes the ear rot produces compounds that stimulates early germination. However, not all ear rots are commonly associated with premature sprouting. In fact, under the right set of conditions, this phenomenon may occur in perfectly healthy ears, without visual disease symptoms.

    Issue: 2018-33

  3. Stalk Quality Concerns

    Author(s): Peter Thomison , Author(s): Pierce Paul

    Poor stalk quality is being observed and reported in Ohio corn fields. One of the primary causes of this problem is stalk rot. Corn stalk rot, and consequently, lodging, are the results of several different but interrelated factors. The actual disease, stalk rot, is caused by one or more of several fungi capable of colonizing and disintegrating of the inner tissues of the stalk. The most common members of the stalk rot complex are Gibberella zeae, Colletotrichum graminicola, Stenocarpella maydis and members of the genus Fusarium.

    Issue: 2018-33

  4. What accounts for variability in grain protein levels in corn?

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

    We’ve recently heard comments and questions concerning the varying levels of grain protein levels being found in shelled corn. Some feed companies have reported seeing many samples in the upper 6% and lower 7% protein range this year but there are reports of levels that are nearly 9%. Some feed mill operations are using 7% as the default value based on this year and last year’s levels. However, in the past, higher grain protein levels (% +2) have been cited for corn. Are the reports of low levels in 2016 and 2017 an anomaly?

    Issue: 2018-01

  5. 2017 Ohio Corn Performance Test: Regional Overviews

    Author(s): Rich Minyo , Author(s): Allen Geyer , Author(s): David Lohnes , Author(s): Peter Thomison

    In 2017, 205 corn hybrids representing 25 commercial brands were evaluated in the Ohio Corn Performance Test (OCPT). Four tests were established in the Southwestern/West Central/Central (SW/WC/C) region and three tests were established in the Northwestern (NW) and North Central/Northeastern (NC/NE) regions (for a total of ten test sites statewide). Hybrid entries in the regional tests were planted in either an early or a full season maturity trial. These test sites provided a range of growing conditions and production environments.

    Issue: 2017-40
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