Cornell Study Finds Organic Waste Recovery Could Replace Over 100% Of US Agricultural Nitrogen

Cornell researchers find that human and animal waste holds $5.7 billion in nutrients, offering a sustainable alternative to synthetic fertilizers.

By: AXL Media

Published: Apr 15, 2026, 7:29 AM EDT

Source: Information for this report was sourced from Cornell University

The Untapped Billions in Domestic Organic Waste

In a landmark study published in Nature Sustainability, researchers at Cornell University have quantified a massive, localized solution to the growing crisis of agricultural sustainability. The team found that the nutrients currently sequestered in animal and human waste across the United States are theoretically sufficient to satisfy 102% of the nation’s nitrogen needs and 50% of its phosphorus requirements. This organic resource represents an untapped economic value exceeding $5.7 billion every year. Chuan Liao, an assistant professor at Cornell and the study’s lead author, emphasizes that the primary obstacle to utilizing this wealth is not a lack of resources, but rather a lack of coordination between waste producers and the farms that need them.

Mapping the Divide Between Surplus and Scarcity

The research utilized high resolution data to uncover a significant geographic mismatch between where waste is generated and where it is most needed for crop production. Nutrient surpluses are naturally concentrated in population dense urban centers in the Northeast and intensive livestock regions in the West. Conversely, the high demand agricultural hubs of the Midwest and the southern Great Plains face persistent nutrient deficits. Despite this distance, the study reveals that 37% of nitrogen and 46% of phosphorus can be utilized within the very regions where they are produced. Furthermore, more than half of the remaining surplus can be redistributed to neighboring areas with minimal economic or environmental overhead.

Geopolitical and Environmental Drivers for Transition

The urgency of transitioning away from synthetic fertilizers is underscored by both environmental degradation and global instability. Current manufacturing processes for synthetic nutrients are carbon intensive and frequently rely on overseas supply chains. Liao noted that ongoing conflicts, such as the Iran War, create volatile supply chain disruptions that directly threaten domestic food security. Beyond geopolitics, the reliance on synthetic chemicals contributes to severe water pollution and soil degradation. By shifting toward a circular economy that recovers nutrients from waste, the U.S. could insulate its agricultural sector from international shocks while simultaneously cleaning up local ecosystems.