Growth in corn yields has boosted production without additional land, according to a study

Over the last 100 years, U.S. farmers have harvested more corn but without additional land.

The National Corn Growers Association found in the 1930s, the average U.S. corn yield was about 24 bushels per acre, grown on 102 million acres of land. In 2010, that number was 161.5 bushels per acre.

This year, U.S. corn farmers planted more than 94 million acres, the highest since 2013. The group credits the growth on advancements in genetics, hybrids, and soil fertility. USDA projects a two-bushel per-acre increase each year through 2032.