Study: Organic dairy farming can store carbon and reduce greenhouse gas emissions
A recent study has uncovered promising evidence that organic dairy farming can do more than just produce milk—it can actively help combat climate change. By adopting organic practices, dairy farms can capture and store carbon in the soil while significantly reducing greenhouse gas emissions. This discovery positions organic dairy as a vital pathway for agriculture to make meaningful contributions to global climate solutions, shifting the industry from a source of emissions to a part of the solution.
Conventional dairy farming, while essential for food production, is a notable contributor to greenhouse gases worldwide. One of the major sources of emissions in traditional dairy is enteric methane—methane gas produced by cows during digestion, which is a potent greenhouse gas many times stronger than carbon dioxide. Additionally, nitrous oxide emissions originate from the use of synthetic fertilisers in feed crop production and improper manure management practices. Carbon dioxide emissions also come from the energy consumed in feed production, farm operations, and land-use changes. Together, these emissions make the dairy sector a significant contributor to agricultural greenhouse gas emissions, intensifying concerns about its environmental footprint.
The study highlights that organic dairy farming methods can shift this balance by turning farms into active carbon sinks. Healthy soil management lies at the heart of this transformation. Practices common in organic farming—such as diverse crop rotations, cover cropping, and reduced tillage—help build soil organic matter, enabling the soil to capture more carbon from the atmosphere. Instead of storing manure in liquid form that emits greenhouse gases, organic farms often compost the manure and apply it to fields, further enhancing soil carbon levels. The use of perennial pastures and well-managed grasslands also plays a crucial role, as these plants’ extensive root systems store carbon deep in the soil over long periods. Together, these practices transform farmland into a vital carbon sponge, working quietly to pull carbon out of the air and lock it safely underground.
Organic dairy farming’s benefits extend beyond carbon storage, offering direct reductions in emissions and broader ecological gains. By avoiding synthetic fertilisers and pesticides, organic farms reduce the emissions of nitrous oxide and carbon dioxide associated with producing and applying these inputs. The organic standards requiring pasture access can lead to healthier animals with potentially more efficient digestion, which may help lower methane emissions per unit of milk produced. On the environmental front, organic practices foster biodiversity, supporting a richer array of beneficial insects, pollinators, and soil microorganisms that contribute to overall ecosystem health. Reduced runoff of chemicals improves water quality in surrounding rivers and lakes, while healthier soils help farms better withstand droughts and extreme weather events, both of which are increasingly important under climate change.
These findings carry important implications for farmers, consumers, and policymakers alike. For farmers, the environmental advantages come alongside economic opportunities. As carbon markets develop, farms that sequester more carbon could gain new revenue streams. The improved soil health and reduced reliance on expensive synthetic inputs also offer more stable yields and lower costs. Consumers, meanwhile, are empowered to make informed choices by supporting organic dairy products that provide tangible climate benefits, alongside ethical considerations such as animal welfare and non-GMO standards. Policymakers can utilise this evidence to design incentives and programs that promote the adoption of organic and regenerative farming methods, thereby helping to meet national and global climate goals.
Organic dairy farming represents a compelling, science-backed approach to mitigating climate change within the agricultural sector. By harnessing time-tested soil-building practices and healthier animal management, it offers a way to transform food production into a part of the climate solution. As research continues and organic practices spread, this approach could play a crucial role in building a more sustainable, resilient, and climate-friendly food system. The next step requires coordinated support—from farmers willing to innovate, consumers making informed choices, and policymakers crafting effective incentives—to scale up these climate-smart farming methods and reap their full environmental benefits.
