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
Strong ethanol production and export trends continue to support corn demand despite seasonal fuel consumption softness.
Benchmark machinery costs against those of similar-sized, high-performing operations to inform equipment and investment decisions.
Record pace corn exports are helping stabilize prices despite softer global grain production and ongoing supply competition.
Broader export demand helps stabilize prices and supports stronger marketing opportunities over time.
With record grain harvests and rising global ethanol demand, leaders across the ag and energy sectors are pushing for year-round E15 sales to mitigate the strain on grain trade.
Farm CPA Paul Neiffer outlines the key difference between previous ECAP payments and the Farm Bridge Assistance Program.

LATEST STORIES BY THIS AUTHOR:

Farm legal expert Roger McEowen discusses the EPA’s rescission of the 2009 endangerment finding on greenhouse gases and what it could mean for agriculture and rural America.
Chef and influencer Marcia Smart joined us to discuss Italian-inspired beef dishes, nutrition for active lifestyles, and how global events shape home cooking.
The USDA says the framework is about “ending abusive government overreach” and “protecting farmers, families, and private property.”
Farm numbers still favor small operations, but production, resilience, and risk management are increasingly concentrated among fewer, larger farms.
Wed, 2/18/26 – 7:30 PM ET
Agriculture Shows
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.
From soil to harvest. Top Crop is an all-new series about four of the best farmers in the world—Dan Luepkes, of Oregan, Illinois; Cory Atley, of Cedarville, Ohio; Shelby Fite, of Jackson Center, Ohio; Russell Hedrick, of Hickory, North Carolina—reveals what it takes for them to make a profitable crop. It all starts with good soil, patience, and a strong planter setup.
Champions of Rural America is a half-hour dive into the legislative priorities for Rural America. Join us as we interview members of the Congressional Western Caucus to learn about efforts in Washington to preserve agriculture and tackles the most important topics in the ag industry on Champions of Rural America!
Featuring members of Congress, federal and state officials, ag and food leaders, farmers, and roundtable panelists for debates and discussions.