Corn May Be More Vulnerable to Warming, Stanford Study Shows

Corn, the world’s second-most-widely grown grain, may be more vulnerable to global warming than previously thought, based on a study led by Stanford University that examined data from field trials.

The study found that a gain of 1 degree Celsius (1.8 degrees Fahrenheit) in temperatures would lower yields for 65 percent of Africa’s corn fields assuming optimal rainfall, Stanford said in an online statement. The same warming under drought conditions would cut corn yields for all of Africa, with declines of 20 percent or more in 75 percent of growing areas, the study showed.