cover crops

Amy Mayer / Harvest Public Media

On a hot, July day in Boone County, Iowa, farmer Brett Heineman shuttled a semi from one of his family’s fields to the local co-op. He and his uncle were harvesting the first crop of oats on this farm in decades.

Before corn and soybeans almost completely covered the landscape -- today, they account for 95 percent of crop acres in Iowa -- most Corn Belt farmers also grew oats or alfalfa. Now, the Heinemans are among the farmers taking a closer look at re-integrating the small grain into their operations.

Amy Mayer/Harvest Public Media

This is the latest installment of Harvest Public Media’s Field Notes, in which reporters talk to newsmakers and experts about important issues related to food production.

For this edition of Field Notes, Harvest Public Media's Amy Mayer spoke with Tom Kaspar, a plant physiologist at the National Lab for Agriculture and the Environment, about the importance of cover crops in how our food is grown.