nico239 wrote:
I ask myself the (open) question of "permanent planks" (vegetables of course) ... judicious or not?
I think that from time to time, you will still need to "fertilize" to compensate for losses (P, K and other elements) that you export.
When you start from a wasteland, you first have an enrichment phase, to bring your soil to a fertility level higher than that, low, of a natural meadow or a wasteland ...
Then, you just need to compensate ... So there, a few rotations of vegetables, with a "support" by hay, from time to time ...
Understand that vegetables "export" elements (what is in what you eat), where a green manure (or a weed) only borrows them (and restores them during mineralization, possibly under a more assimilable form).
I have not yet made precise calculations ...