Spyke

The article also lists other items on an area per calorie level too which is neat to see.

It does remind me a bit of this image.

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feddit.nl

Other factors besides calories per square-whatever-an-acre is, is how much fertiliser, how often does the land need to rest.
It does empty the ground of some nutrients. I love them and grew up on a small potato farm.

22

Land should never rest/fallow, especially if it's tilled. All you end up doing is burning off soil organic matter and adding weeds to your seedbank.

Rotational cropping is a must, preferably with a legume

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Ryumast3rreply
lemmy.world

If you mix potatoes the only big thing you're missing is protein. Otherwise they have a pretty good mix of every other vitamin.

There's pretty much no food that compares.

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TIL potatoes yield 17.8 million calories per acre, so you could feed a family of four on less than 1/4 acre | Spyke