DeKalb played a leading role in the development of commercial hybrid corn. From a base in the early county Farm Bureau, the DeKalb Agricultural Association produced large quantities of high-yield seed varieties, beginning in 1934. Until the mid-1970s, more American farmers planted DeKalb hybrid corn than any other brand. The DeKalb logo was a flying ear of corn. A series of joint ventures and mergers beginning in 1982 resulted in the DeKalb brand of agricultural products being owned by Bayer since 2017.