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There’s a permaculture technique called Keyline Irrigation — one of its claims is that top soil can be generated at a much quicker pace as the result of a practice known as subsoiling, wherein a large blade cuts deep grooves into a field. The blade cuts plant roots which in turn decompose, and aerate the soil, providing pathways for water to infiltrate.

It hasn’t been scientifically validated. Anecdotal reports from farmers like Mark Shephard are that it works. [1]

1: https://books.google.com/books/about/Restoration_Agriculture...