Are you talking about a row of sweet corn in your garden, or an acre plot?

The garden plot I have for sweet corn is 20 x 40 ft.

I have an old corn planter (parts getting pretty rusty) I used as a child for planting corn. It would drop 3 or four seeds at a plunge and would plant an area your size in a jiffy. I have not seen one for sale since 1937, maybe I should work mine over though I no longer am planting corn. Al