On a recent Odd Lots episode, they interviewed a Canadian lentil farmer. His claim was that a family of 3 (Father, Mother, Daughter) could farm 1200 acres of lentils with time left over due to modern automation.

So I guess it would depend on the automation level of the kind of crops you’re planting.

Interesting! It shocks me that you can run a farm on less than a square mile, I can practically plant that by hand, lol