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Agronomic Crops Network

Ohio State University Extension

CFAES

C.O.R.N. Newsletter

  1. close up of wheat heads
    Author(s): Laura Lindsey , Author(s): Matthew Hankinson

    Results from the 2023 Ohio Wheat Performance Test are now online at:  2023 Ohio Wheat Performance Test. This year’s report includes 74 winter wheat varieties and 16 brands grown in five counties (Wood, Wayne, Darke, Union, and Pickaway) (Figure 1).

    Issue: 2023-24
  2. wheat seed
    Author(s): Laura Lindsey , Author(s): Pierce Paul

    We initially anticipated an early wheat harvest this year due to dry weather conditions. However, with cool, wet weather in some areas of the state, wheat harvest may be later than usual. Late harvest coupled with excessive rainfall means more time for late-season mold growth, mycotoxin accumulation, test weight reduction, and sprouting; all of which could result in poor overall grain quality. In 2018, we evaluated wheat harvested on June 29 (at 12% moisture content) and July 8 (at 14% moisture content).

    Issue: 2023-21
  3. wheat seedlings
    Author(s): Laura Lindsey

    For the germination process to begin, wheat seeds need to imbibe (take in) water. With dry soil in some areas of the state, there may be concerns about delayed germination and emergence after planting. In previous years, when wheat was planted into dry soil, emergence occurred approximately 4 weeks after planting when soil moisture was restored with rainfall. Some key points to keep in mind:

    Issue: 2022-34
  4. Author(s): Pierce Paul

    Due largely to rainfall, high relative humidity, and warmer temperatures over the last several days, the risk for head scab is now moderate across most of the state of Ohio, and high across the south. The risk is low in NW Ohio. This would be the time to apply a fungicide to control head scab and reduce the risk of grain contamination with mycotoxins as fields reach anthesis in the northern third of the state. Even fields in the lower half of the state that flowered 5-7 days ago could benefit from a fungicide application.

    Issue: 2022-16
  5. Author(s): Laura Lindsey

    The short answer, probably not.

    Low temperatures may dip to low 30s/high 20s in northern Ohio over the next few days. However, these temperatures should not harm winter wheat at the Feekes 6 to 7 growth stage. [As a side note, I wrote this exact article last year at this time. Temperatures in Ohio were in the low 30s to upper 20s in northern Ohio, but wheat yield ended up being record-high for many famers due to the long grain fill period. Last year, there was even snow on some fields.]

    Issue: 2022-11
  6. On March 30, we’ll walk a wheat field with Dr. Laura Lindsey who will show us how to evaluate the field coming out of winter and refresh growth staging the wheat. Growth staging is critical for nutrient and crop protection applications.

    All topics covered:

    Issue: 2022-06
  7. Author(s): Laura Lindsey

    After a (short) second round of winter last week, there has been some concern regarding winter wheat. As a reminder, the magnitude of freeze damage depends on: 1) temperature, 2) duration of temperature, and 3) wheat growth stage. During the cold snap last week, the majority of winter wheat in Ohio was at the Feekes 6 to 8 growth stage.

    Issue: 2021-11
  8. Author(s): Laura Lindsey , Author(s): Alexander Lindsey

    The incoming cold temperatures are not likely to impact winter wheat. The magnitude of freeze damage depends on: 1) temperature, 2) duration of temperature, and 3) wheat growth stage.

    Prior to the Feekes 6 growth stage, the growing point of wheat is below the soil surface, protected from freezing temperatures. Most of the wheat in Ohio is at the Feekes 4 (beginning of erect growth) or Feekes 5 (leaf sheaths strongly erect) growth stage and should be unaffected by the incoming cold temperatures, predicted to be mid- to low 20s on Wednesday and Thursday.

    Issue: 2021-07
  9. Author(s): Laura Lindsey , Author(s): Alexander Lindsey , Author(s): Aaron Wilson

    Overnight temperatures on April 15 and April 16, 2020 dropped into the low to mid 20s across a large portion of Ohio (Figure 1), and unofficial reports show a few locations briefly dropped into the upper teens! These temperatures were generally 12-20°F below average (1981-2010). A closer investigation at a few of the colder sites reveal temperatures remained below 32°F for 9-11 hours, below 28°F (hard freeze) for 7-9 hours, and below 22°F for 3-5 hours.

    Issue: 2020-10
  10. Author(s): Laura Lindsey , Author(s): Ed Lentz, CCA , Author(s): Pierce Paul

    It’s important to correctly identify winter wheat growth stages to enhance management decisions, avoiding damage to the crop and unwarranted or ineffective applications. Remember, exact growth stage cannot be determined by just looking at the height of the crop or based on calendar dates.

    Issue: 2020-09

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