Following the stock market, ag commodity prices experienced wild swings last week as traders came to grips with the presence of coronavirus in the U.S.

On Thursday, the worst trading day of the week, corn saw a 2.5% drop in value while beans experienced a 1.5% fall. This follows price drops that began in earnest the week prior.

Ethanol also took a hit as oil prices dropped to levels not seen in more than a decade. With ...