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
Export volumes remain positive year-to-date, but weaker soybean loadings and slowing wheat movement hint at early bottlenecks in global demand or river logistics. Farmers should watch basis levels and freight conditions as export competition heats up.
Industry leaders representing more than 40 nations gathered to discuss the future of ethanol and other corn-based products.
A fast-moving series of trade signals from the White House and key partners is resetting the near-term outlook for U.S. agriculture.
Margin Protection and the new MCO add county-level margin tools — with earlier price discovery, input cost triggers, and high subsidy rates — to complement on-farm risk plans for 2026.
Set targets and use forwards, futures, or options to manage downside while preserving room for rallies.
Expanding bioethanol use strengthens rural economies, supports farm markets, and positions U.S. agriculture at the center of global low-carbon trade.

LATEST STORIES BY THIS AUTHOR:

Farm Bureau economist Dr. Faith Parum explains how geopolitical dynamics in the Middle East could further tighten fertilizer movement, increase fuel costs, and complicate planting decisions for U.S. farmers this spring.
Missouri Farm Bureau President Garrett Hawkins discusses the potential impact of data center growth on farmland, the Landowner Fairness Act, and key priorities for Missouri farmers heading into planting season.
Dr. Jeffrey Gold provides insights on supporting aging populations in rural communities on this week’s Rural Health Matters segment.
OHFB President Bill Patterson shares an update from Washington on the group’s policy priorities and the issues shaping agriculture ahead of the 2026 planting season.
Ben Kurtzman with American Farmland Trust discusses the growing pressure on farmland and ranchland and the steps being taken to help conserve farms and ranches across the country ,as unrest in the Middle East adds more obstacles for producers.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.