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Agronomic Crops Network

Ohio State University Extension

CFAES

C.O.R.N. Newsletter

  1. Lep Monitoring Network – Western Bean Cutworm Numbers Remain High # 14

    Author(s): Trevor Mullen , Author(s): Rosalind Holt-Frank , Author(s): Evan Hodkinson , Author(s): Amy Raudenbush , Author(s): Nic Baumer , Author(s): Frank Becker , Author(s): JD Bethel , Author(s): Don Hammersmith , Author(s): Mary Jo Hassen , Author(s): Seth Kannberg , Author(s): Ed Lentz, CCA , Author(s): Kendall Lovejoy, CCA , Author(s): Clifton Martin, CCA , Author(s): Garth McDorman , Author(s): Les Ober, CCA , Author(s): Jordan Penrose , Author(s): Amanda Perkins , Author(s): Beth Scheckelhoff , Author(s): Mike Sunderman , Author(s): Frank Thayer , Author(s): Kyle Verhoff , Author(s): Jacob Winters , Author(s): Andy Michel , Author(s): Kelley Tilmon

    This is our 14th week of monitoring moth pests in Ohio. Between July 21st and July 27th, we continued to monitor Corn Earworm (CEW) and Western Bean Cutworm (WBC). The statewide averages for WBC and CEW decreased in the majority of counties over the past week. We plan to continue monitoring for WBC and CEW into August and then will likely switch our traps over to fall armyworm.

    Western Bean Cutworm

    Issue: 2025-24

  2. Gibberella Ear Rot/DON Risk Tool is Now Available

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

    A vomitoxin (Gibberella ear rot/DON) risk forecast model developed by The Ohio State University Cereal Pathology Lab, thanks to support from the Ohio Corn Marketing Program, is now available. The risk forecast model was developed using weather data and corn grain DON levels from 170 Ohio field environments. Use this model to estimate the risk of DON contamination in your field reaching or exceeding 1 ppm through the new web-based Crop Risk Tool hosted by the Crop Protection Network.  

    Issue: 2025-23
  3. WBC adult

    Lep Monitoring Network – Western Bean Cutworm numbers continue to rise # 13

    Author(s): Evan Hodkinson , Author(s): Trevor Mullen , Author(s): Rosalind Holt-Frank , Author(s): Amy Raudenbush , Author(s): Garth McDorman , Author(s): Nic Baumer , Author(s): Frank Becker , Author(s): JD Bethel , Author(s): Trevor Corboy , Author(s): Nick Eckel , Author(s): Mary Jo Hassen , Author(s): Seth Kannberg , Author(s): Alan Leininger , Author(s): Ed Lentz, CCA , Author(s): Kendall Lovejoy, CCA , Author(s): Clifton Martin, CCA , Author(s): Sarah Noggle , Author(s): Les Ober, CCA , Author(s): Jordan Penrose , Author(s): Beth Scheckelhoff , Author(s): Don Hammersmith , Author(s): Frank Thayer , Author(s): Kyle Verhoff , Author(s): Jacob Winters , Author(s): Curtis Young, CCA , Author(s): Andy Michel , Author(s): Kelley Tilmon

    This is our 13th week of monitoring moth pests in Ohio. Between July 14th and July 20th, we continued to monitor Corn Earworm (CEW) and Western Bean Cutworm (WBC). Over the past week, the state of Ohio experienced moderate rainfall and average temperatures (78.0 °F). The statewide averages for WBC and CEW remained increased from the previous weeks. Please read below for more details.

    Issue: 2025-23

  4. Tight Tassel Wrap in Corn

    Author(s): Stephanie Karhoff, CCA , Author(s): Aaron Wilson , Author(s): Osler Ortez , Author(s): Clint Schroeder , Author(s): Greg LaBarge, CPAg/CCA

    In the last two weeks, there have been localized reports of tight tassel wrap in corn, where the tassel remains bound by the flag leaf (Figure 1). This condition can interfere with pollen shed and lead to poor kernel set in some cases.

    Issue: 2025-23

  5. Lep Monitoring Network – Western Bean Cutworm numbers are on the rise #12

    Author(s): Evan Hodkinson , Author(s): Rosalind Holt-Frank , Author(s): Trevor Mullen , Author(s): Amy Raudenbush , Author(s): Sarah Noggle , Author(s): Garth McDorman , Author(s): Nic Baumer , Author(s): Frank Becker , Author(s): JD Bethel , Author(s): Trevor Corboy , Author(s): Nick Eckel , Author(s): Mary Jo Hassen , Author(s): Ed Lentz, CCA , Author(s): Kendall Lovejoy, CCA , Author(s): Clifton Martin, CCA , Author(s): Mike Sunderman , Author(s): Jordan Penrose , Author(s): Beth Scheckelhoff , Author(s): Don Hammersmith , Author(s): Frank Thayer , Author(s): Kyle Verhoff , Author(s): Jacob Winters , Author(s): Curtis Young, CCA , Author(s): Andy Michel , Author(s): Kelley Tilmon

    This is our 12th week of monitoring moth pests in Ohio. Between July 7th and July 13th, we continued to monitor Corn Earworm (CEW) and Western Bean Cutworm (WBC). Over the past week, the state of Ohio experienced mild rainfall and average temperatures (75.9 °F), which may have led to an increase in WBC activity. The statewide averages for CEW remained low. Please read below for more details.

    Issue: 2025-22

  6. Corn Vomitoxin Management Critical Considerations at Tassel

    Author(s): Jason Hartschuh, CCA , Author(s): Stephanie Karhoff, CCA , Author(s): Pierce Paul , Author(s): Cristiano Nesi

    Mycotoxins, specifically deoxynivalenol (DON), commonly referred to as vomitoxin, has become a significant problem for Ohio corn growers. What was once considered an every-ten-year problem, has now become a yearly challenge in some sections of the state. DON contamination of grain is associated with Gibberella ear rot (GER), a disease caused by the fungus Fusarium graminearum. The Ohio State University Cereal Pathology Lab led by Dr.

    Issue: 2025-22

  7. Southwest Ohio Agronomy Field Day Set for August 12 at Fayette County Airport

    Author(s): Ken Ford , Author(s): Justin Baum

    The Southwest Ohio Corn Growers Association, in collaboration with Ohio State University Extension – Fayette County, invites farmers, agronomists, and community members to the 2025 Agronomy Field Day on Tuesday, August 12, from 9:00 a.m. to 2:00 p.m. at the Fayette County Airport, located at 2770 Old SR 38 NW, Washington Court House, Ohio.

    Issue: 2025-21

  8. Battle for the Belt: Season 3, Episode 11: June Weather Update

    Author(s): Maria Kessler , Author(s): Laura Lindsey , Author(s): Osler Ortez , Author(s): Aaron Wilson , Author(s): Taylor Dill , Author(s): Diego Miranda

    Season 3, Episode 11 of Battle for the Belt is now available

    In Episode 11 of Battle for the Belt, we get a June weather update from Dr. Aaron Wilson, OSU Extension Ag Weather & Climate Field Specialist and State Climatologist of Ohio.  

    Issue: 2025-17

  9. Battle for the Belt: Season 3, Episode 10: Adjustments for Late-Planted Soybean

    Author(s): Taylor Dill , Author(s): Maria Kessler , Author(s): Diego Miranda , Author(s): Laura Lindsey , Author(s): Osler Ortez

    Season 3, Episode 10 of Battle for the Belt is now available:

    Issue: 2025-16

  10. 2025 Corn College & Soybean School

    Author(s): Alyssa Essman , Author(s): Stephanie Karhoff, CCA , Author(s): Amanda Douridas, CCA

    Join us on February 27th for the 5th annual virtual Corn College and Soybean School presented by the Ohio State University Extension Agronomic Crops Team. The program will run from 9:00 AM to 4:00 PM and feature OSU Extension field and state specialists with updates and topics relevant for the 2025 growing season. CCA CEU credits will be available upon viewing the live presentations.

    Issue: 2025-03

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