alt Hacker NewsHow much fertilizer does the Iowan farmer need to add to their field to achieve that? How many years can they maintain that yield without eroding the soil?
Replies
UncleOxidant • today at 3:01 AM
How many years can they maintain that without petroleum inputs?
Who cares? Fertilizer is nitrogen that literally comes out of the air. Erosion is vastly overstated by permaculture enthusiasts and can be mitigated vy changes to tillage and irrigation. Erosion in the Midwest clocks in at about 0.04 mm per year, but there's plenty of new soil deposition around the Mississippi. It's a manageable issue.