When Al Schafbuch cut back on plowing his Iowa fields decades ago and later began growing cover crops, he was out to save money on fertilizer and reduce erosion. He got those benefits and saw his soil change for the better, too: dark, chunky, richly organic matter that he said feels like “chocolate cake."
There's one more big payoff that benefits everyone: tilling the soil less, and growing more cover crops, can help farmers store more planet-warming carbon in fields. More plants take in more carbon dioxide, and soil microbes breathe out less carbon when undisturbed. That can mean money for participating farmers in the form of carbon offsets — payments that companies can make that support carbon storage in farms and, in theory, balance out their emissions elsewhere.
