What would corn yields look like if there was a nuclear war?

Each year, farmers produce more than a billion metric tons of corn. As technology advances, researchers are looking at how that could change with nuclear contamination.

Researchers at Penn State University have studied how a nuclear war scenario would play out at nearly 40,000 locations around the world. Using their agro-ecosystem, they found that if five tons of soot were to drop, it would lower corn production by seven percent. On a larger scale, with 165 tons of soot, that number jumps to an 80 percent drop in corn yields.

Researchers say they hope this scenario never happens, but they warn it is always best to prepare for catastrophic events.

Related Stories
While this month’s WASDE report will not include updated figures on U.S. crop size, officials say it will offer a clearer picture of crop conditions in the Southern Hemisphere.
Southern producers head into 2026 with thin margins, tighter credit, and rising agronomic risks despite scattered yield improvements.
Record yields and exceptionally low BCFM strengthen U.S. corn’s competitive position in global markets.
Credit stress is building for row-crop farms despite steady land values and slight price improvements.
American soybean and corn leaders, along with Canada’s AgriFood sector, testified before the U.S. Trade Representative’s Office in support of the trade pact between the U.S., Mexico, and Canada.
Pressure on grain storage capacity and stronger export positioning are pushing more grain onto railroads, highways, and river systems as logistics become a key bottleneck this fall.
Tryston Beyrer, Crop Nutrition Lead at The Mosaic Company, examines planning trends as producers weigh corn and soybean plantings for 2026.
Corn exports remain strong, while soybeans and wheat shift week to week on river conditions and global demand.
Lower tariff rates and new rail-service proposals may improve corn movement efficiency during early-season marketing.

LATEST STORIES BY THIS AUTHOR:

FWSSR Communications Director Matt Brockman discusses the event’s competitions, safety preparations, and family-friendly activities during the opening weekend.
From Junior Heifer Shows to Mustang Magic competitions, the 23-day event brings together 4-H and FFA participants, livestock enthusiasts, and families to celebrate North Texas’ rich Western heritage.
CLAAS Senior Vice President for the Americas Region Eric Raby joined us to preview the new docuseries “CLAAS: Made for More,” premiering tonight at 9 PM ET only on RFD-TV.
Dairy farmer and Discover Ag co-host Tara Vander Dussen joined us to discuss the Whole Milk for Healthy Kids Act, her experience at the signing, and what’s next for her family and farm.
The Farm Bureau is making an urgent call to Congress for more farm support. Colton Lacina with Farmers National Company joined us to discuss farmland values and how market dynamics for the year ahead reflect stabilization rather than collapse.
Analysts say a Supreme Court decision on tariffs could reshape protein markets, strain U.S.-China trade, and force farmers to rethink global demand strategies.
Wayne Cockrell with the Texas and Southwestern Cattle Raisers Association joined us to discuss preparedness, producer awareness, and the industry’s response to New World screwworm concerns.
Agriculture Shows
America’s Heartland brings positive, heartfelt stories about American agriculture to viewers in both urban and rural areas.
Hosted by Pam Minick, “The American Rancher” focuses on the people and places that make ranching an American lifestyle. This half-hour magazine format series features livestock producers and their ranches, animals, and ranching practices.
For the latest information on how to take your operation from good to great, tune into Ag PhD. The program includes a wide range of agronomic information from how to maximize your fertilizer program & tiling to stopping those yield-robbing insects and crop diseases and more.
RFD Network is always creating new ways for rural America to educate and to be educated. RURAL AMERICA LIVE, the network’s longest-running self-produced program, is certainly no exception.