Main stem of a corn plant?
Called a Stalk
1. The entire above-ground portion of a corn plant, including the stem, the leaves, the ear(s), and tassel. Example: "Julie placed a stalk of corn on her front porch for an autumn decoration." 2. The main stem of the corn plant, as distinct from its other parts. Example: "Brad found some lesions on the corn stalk which were not apparent on the leaves or roots."