Joe and D. Reid,

Both your answers are awesomely helpful. I began to see the reality
when I divided an acre into 44,000 square ears of corn!

Hmmm... So SIXTEEN square feet is the magic answer...

We do want to try subsistence farming. However, your answers have
caused some major lightbulbs to illuminate inside my head. It sounds
like we should be buying cornmeal, and perhaps beans, and raising
chiles, squashes, root crops, etc.

D.R. Thanks for defining the differences between "gardening" and
"farming"

"Farmer Vern"