There are plenty of great projects and commercial regenerative farms that have demonstrated that exploited and degraded soils can be made productive again in a

There are plenty of great projects and commercial regenerative farms that have demonstrated that exploited and degraded soils can be made productive again in a matter of years with little to no external inputs in terms of fertilizer and water. The Work of Ernst Götschl (syntropic agriculture) comes to mind in tropical climates, or Mark Shepard in mid-west US.