plant a mix of cover crops You're starting halfway on the track. Most things you plant in arid soil won't grow, which is the situation where the GP started fro

plant a mix of cover crops You're starting halfway on the track. Most things you plant in arid soil won't grow, which is the situation where the GP started from. Sure, once you have a soil quality where your crop mix grows, it will take less than 50 years. "How to get an inch of topsoil?" - "first, have an inch of topsoil" isn't really the scenario the GP was thinking of.