Seed corn may be in short supply for Minnesota farmers, causing growing concern as the spring planting season draws nearer, according to John Mages, president of the Minnesota Corn Growers Association.

Syngenta, which has its seed headquarters in the Minneapolis-St. Paul area, saw its production fall 15 to 25 percent short of expectations in the summer of 2011. This has left the company limited in its ability to supply farmers preparing for spring, said corn genetics portfolio manager Eric Boersma.