Production of ethanol in Iowa and across the United States, which plummeted to decade-low levels during the early weeks of the COVID-19 crisis, is starting to show clear signs of a recovery as the economy reopens and Americans drive more, according to an analysis by the Iowa Farm Bureau Federation (IFBF).

For the week that ended May 29, Iowa ethanol production was pegged at 62.5 million gallons by the Energy Information Administration (EIA), and U.S. production...