"So nine times out of ten the salt is retained in the leaves of the plant, so you’d have to eat many many kilos of potatoes before you’d exceed your recommended salt intake. But some of the salads are heavy with salt"
Then how are the leaves disposed of, I do not know. Fed to pigs or burnt perhaps, if they were simply used as mulch you would still wind up with a buildup of salt in the soil.
Just dump the leaves in the ocean. Biodegradable and the salt came from the ocean anyways. The leaves if too concentrated will intake a lot of water and their cells burst. Or the leaves won't be too concentrated and will be eaten by nature.
Then how are the leaves disposed of, I do not know. Fed to pigs or burnt perhaps, if they were simply used as mulch you would still wind up with a buildup of salt in the soil.