Des Moines Register: Iowa farmers are growing more organic corn, soybeans, hay and oats, driving a 30% spike in the state's organic acres over the past three years, a new U.S. Department of Agriculture report shows. Iowa had 779 certified organic farms last year with 133,691 acres. Those figures include 47 more farms and 30,555 more acres than recorded in 2016, the year covered by the most recent previous survey. Iowa now ranks sixth nationally for the number of organic farms, the report says.