State and federal leaders have put millions into improving crops and soils so they absorb more carbon dioxide, but across the U.S. that would only cut 3% of agricultural emissions, researchers found.

The new era of climate mitigation on the farm would look like a beefed-up version of longstanding USDA conservation programs, augmented by a carbon bank that sets a floor price for carbon sequestration and reductions in greenhouse gas emissions, said leaders of the Food and Agriculture Climate Alliance (FACA) on Wednesday. “That’s what we’ve modeled it after,” said Chuck Connor, a founding member of the alliance and a former deputy agriculture secretary.