Listened to part of Farming Today this morning. Essence of the report was that the world soils have less than 100 harvests left in them, and that I assume will be on a sliding scale. All a bit depressing.
They also said that we can build soil.
Which is easier when a given region of farmland (it doesn't have to be one farm) has a more diverse mix of enterprises.
Which will be encouraged by a return to a more localized supply chain, demanding a wider range of local output.