The Potential for U.S. Agriculture to Be Greenhouse Gas Negative report highlights five key areas where U.S. agriculture could become greenhouse gas negative. Dr. Chuck Rice, University Distinguished Professor in Agronomy at Kansas State University, discussed the findings.
“This report focuses on practices ready for implementation,” Rice said. “We’re not talking about waiting 30 to 50 years for research.”
The five areas identified are soil carbon sequestration, nitrogen management, livestock systems, energy use, and also food waste reduction.
Soil Carbon Sequestration
Practices like no-till farming, cover cropping, and integrating perennials into rotations can increase carbon storage in soils. “These methods are already in use, but broader adoption is needed,” Rice explained. “Soil sequestration alone could contribute nearly 40% of needed reductions.”
Nitrogen Management
Better fertilizer use can reduce nitrous oxide emissions. “Studies show that 10 to 15% of farmland may not be profitable for crops,” Rice noted. “Those areas could instead support livestock grazing, biofuels, or pollinator habitats.”
Livestock Systems
Improvements in feed efficiency, manure management, and breeding can lower methane emissions from cattle, swine, as well as dairy production.
Energy Use & Food Waste
Renewable energy—such as solar, wind, and biofuels—can reduce agriculture’s carbon footprint. Additionally, cutting food waste can lessen emissions tied to food production and disposal.
A 10-Year Goal
Agriculture’s shift to negative emissions is feasible within a decade. “We don’t need 100% adoption,” Rice said. “With 50% adoption, we can make a significant impact.”
Tracking Progress
Tools like carbon intensity scores help farmers measure emissions and efficiency. “It’s not about comparing scores with others,” Rice explained. “It’s about finding ways to improve and boost profitability.”
Addressing Misconceptions
Agriculture contributes about 10% of U.S. emissions, but Rice emphasized its efficiency gains. “Increasing soil carbon makes farms more resilient to droughts and heavy rains,” he said. “Sustainability and profitability go hand in hand.”
