clickety wrote:
The same closing wheel used all for horse drawn row planters.
To ‘check plant’ corn required using a check wire which ran the length of the field. It had bumps spaced every 42 inches which activated the seed drops. It was time consuming because the operator had to dismount and reset the stake at each end of the field before making the return pass. The resulting 42 inch squares resulted in the ability to then cross cultivate the field for better weed control.
So the edges of your field have to be parallel so the length of the rows is the same.