Diverse Landcover Boosts Yields for Major U.S. Crops

Diverse landcover can boost yields for major U.S. crops like corn and wheat, a new study shows. The findings run counter to previous assumptions that suggest monoculture—or specializing in a single crop, covering larger fields, that can be harvested with bigger machines on a simplified landscape—boosts a farm’s production capacity.

“We found that in more diverse systems, corn and wheat yields can be up to 10 percent higher,” says Emory University Assistant Professor in environmental sciences Emily Burchfield. “And if you combine high diversity of landcover with more complex landscape configurations, corn and wheat yields increase by more than 20 percent.” The research, funded by USDA’s National Institute of Food and Agriculture, has major implications for helping farmers adapt to climate change.

Higher diesel and fertilizer prices are squeezing farm profit margins ahead of the midterm elections. Farmers in Iowa and Kansas discuss rising harvest costs, the war in Iran and whether those pressures will change their votes. Peter Tubbs reports on the debate over farm input costs and the differing political responses across the Corn Belt.