In a statement Wednesday, the group's president, Billy Thiel, said Nixon received unanimous support from its 14 member board of directors compromised of Missouri corn growers.
"We've never thrown our support behind a governor, but Gov. Nixon has gone the extra mile to support Missouri's farm families," Thiel said. "We are confident he will do what's best for Missouri farmers so we can do what we do best: feed and fuel the world."
Theil lauded Nixon's efforts to encourage international exports of Missouri agriculture products and his opposition to a rule that had been mulled by the Obama administration to restrict children from working on family farms.
The group also praised Nixon's support of the Missouri Qualified Fuel Ethanol Producer Incentive Fund, a grant program to encourage ethanol producers and corn farmers in the state.
Earlier in the year, Nixon was endorsed by the Missouri Soybean Association. The group, too, praised Nixon's involvement in trade deals, as well as his work on Missouri River issues during flooding last year. Nixon was the first Democrat to receive support from the soybean producers group.