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Ohio State University Extension

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Corn

Recently revised corn-related fact sheet

Ohio Corn Performance Test (OCPT): https://ohiocroptest.cfaes.osu.edu/corntrials/

Ohio Organic Corn Performance Test (OOCPT): https://ohiocroptest.cfaes.osu.edu/organiccorntrials/

Ohio Silage Performance Trial: https://ohiocroptest.cfaes.osu.edu/silagetrials/

Corn Production and Management by Topic
Climate  Harvesting 
Growth and Development  Specialty Corns

Fertility Recommendations 

Isolation Requirments for Identity Preserved (IP) Non-GMO Corn Production
Corn Pest Management   

 

We recently updated the “Troubleshooting Abnormal Corn Ears” site to help corn growers and agricultural professionals diagnose and manage various ear and kernel anomalies and disorders

 

 

 

2020 Ohio Corn Performance Test

2020 Ohio Silage Performance Test

C.O.R.N. Newsletter Articles

  1. 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
  2. corn field

    Ohio Corn Performance Test (OCPT) – 2024 Results Overview

    Author(s): Rich Minyo , Author(s): Osler Ortez

    The purpose of the Ohio Corn Performance Test (OCPT) is to evaluate corn hybrids for grain yield and other important agronomic characteristics. Results of the test can assist farmers in selecting hybrids best suited to their farming operations and production environments as well as recommendations made by seed companies and breeding programs.

    Issue: 2025-01

  3. Precipitation, Cooler Weather, and Corn Dry Down

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

    With >70% of mature corn and harvest season just started it is time for a brief update on dry down and potential lodging issues post-recent storms. Cooler than normal temperatures and wetter than normal precipitation can impact corn drydown. We recently transitioned to cooler temperatures as well as ample precipitation in many parts of the state.

    Issue: 2024-35

  4. 2024 End-of-Season Corn Yield Forecasts for Ohio

    Author(s): Osler Ortez

    The last USDA Crop Progress & Condition report (week ending 9/29/24) indicated that 96% of Ohio's corn acreage was at the dented stage (R5), 70% of corn was mature (R6), and 16% was harvested for grain. All of last week’s progress was well ahead of 2023 and the 5-year average for this time of the year.

    Issue: 2024-35
  5. A Fall Armyworm

    Lep Monitoring Network – News on Fall Armyworm (FAW), WBC and CEW, Update # 16

    Author(s): Stephanie Pflaum , Author(s): Amy Raudenbush , Author(s): Maddie Brillhart , Author(s): Nic Baumer , Author(s): Trevor Corboy , Author(s): Allen Gahler , Author(s): Mary Jo Hassen , Author(s): Ed Lentz, CCA , Author(s): Kendall Lovejoy , Author(s): Clifton Martin, CCA , Author(s): Sarah Noggle , Author(s): Les Ober, CCA , Author(s): Jordan Penrose , Author(s): Beth Scheckelhoff , Author(s): Mike Sunderman , Author(s): Frank Thayer , Author(s): Kyle Verhoff , Author(s): Brooks Warner , Author(s): Jacob Winters , Author(s): Kayla Wyse , Author(s): Curtis Young, CCA , Author(s): Andy Michel , Author(s): Kelley Tilmon

    Today rounds out our 16th week of monitoring for Ohio pests at the Lep Network. This past week, we have seen a sharp decline in WBC numbers and are continuing to see a low average for CEW. Since we are nearing the end of scouting season for WBC, expect this decline to continue and for averages to remain low. Monitoring for WBC will only continue for one more week, while CEW scouting will carry on through August.

    Issue: 2024-26
More Newsletter Articles

Multimedia

Episode 144 – Dealing with DON
Agronomy & Farm Management Podcast Episode 144 – Dealing with DON

There is nothing more frustrating than getting rejected at the elevator due to high vomitoxin (aka DON) levels. DON is produced by a fungi produced on the ear and is usually infected at the time of pollination. To give farmers a better perspective of what happens behind the scenes at a grain elevator, we interview 3 grain merchandisers on their process when DON test levels start creeping up.
Agronomy & Farm Management Podcast Episode 144 – Dealing with DON
Agronomy & Farm Management Podcast Episode 144 – Dealing with DON

There is nothing more frustrating than getting rejected at the elevator due to high vomitoxin (aka DON) levels. DON is produced by a fungi produced on the ear and is usually infected at the time of pollination. To give farmers a better perspective of what happens behind the scenes at a grain elevator, we interview 3 grain merchandisers on their process when DON test levels start creeping up.
Season 2, Episode 16: Corn Diseases & Ear Rots
Season 2, Episode 16: Corn Diseases & Ear Rots

 

Dr. Pierce Paul from the Department of Plant Pathology discusses corn disease management and ear rots. Learn about a new tool in development to predict the risk of vomitoxin in corn.
Season 2, Episode 16: Corn Diseases & Ear Rots
Season 2, Episode 16: Corn Diseases & Ear Rots

 

Dr. Pierce Paul from the Department of Plant Pathology discusses corn disease management and ear rots. Learn about a new tool in development to predict the risk of vomitoxin in corn.
More Multimedia

Publications

  1. Abnormal Ear Diagnosis Poster, ACE-1

    Abnormal Ear Diagnosis Poster,  ACE-1. Farmers frequently encounter abnormal corn ears in their fields when the crop has experienced a major stress, such as drought, temperature extremes, disease, insect injury, or misapplied chemicals. These abnormalities often affect yield and grain quality adversely. In this poster, ten abnormal corn ears with distinct symptoms and causes are highlighted. The purpose of the poster is to help corn growers and agricultural professionals diagnose various ear disorders.

  2. Corn Disease Management in Ohio, Bulletin 804

    Corn Disease Management in Ohio, Bulletin 804. Five to 15 percent of Ohio's corn crop is lost to disease each year, amounting to nearly $100 million in lost farm income. Corn diseases include seedling diseases, leaf blights, stalk rots, ear and kernel rots, and viruses. This bulletin describes the disease symptoms, provides color images, gives the environmental factors favoring the disease, the method of transmission and infection, and management options for the major diseases affecting corn in Ohio.

  3. Corn, Soybean, Wheat and Alfalfa Field Guide, Bulletin 827
    06/2019

    Corn, Soybean, Wheat and Alfalfa Field Guide, Bulletin 827.Looking for a handy guide to take to the field to diagnosis various pest and production problems? This guide is the answer! You will want one of these guides in the truck and maybe a second in the tractor.

  4. Ohio Agronomy Guide 15th Edition, Bulletin 472
    04/2017

    Ohio Agronomy Guide 15th Edition, Bulletin 472. The newly revised Ohio Agronomy Guide serves as the official compilation of adaptive results and recommendations from research and educational programs. Described in this manual is information on Ohio's climate and soil, soil and water management, soil fertility, and corn, small grain, and forage crop production and management. Also, seed evaluation and weed control for the previously listed crops are discussed.

More Publications
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