North Carolina, February 12, 2026 - A three-year field study led by researchers at NC State University found that enhanced efficiency fertilizers can significantly reduce nitrous oxide and ammonia emissions from corn production, but results vary depending on soil type. The findings matter for U.S. farmers facing high input costs and growing pressure to adopt sustainable agriculture practices while protecting yields and profitability.

The research, conducted across 18 farms stretching from Greensboro to North Carolina's coastal plain, provides new data on how dual urease and nitrification inhibitors influence nitrogen use efficiency, greenhouse gas emissions, and farm economics. For producers navigating volatile commodity prices and evolving farm bill incentives, the results offer practical guidance.

Only 40-60% of Nitrogen Is Used by Crops

Conventional synthetic fertilizers have long underpinned U.S. yield growth, allowing farmers to produce more grain on less land. However, nitrogen fertilizer remains one of the largest variable input costs in corn production.

According to the study, only 40% to 60% of applied nitrogen is actually taken up by crops. The remaining nitrogen can convert into nitrous oxide-a potent greenhouse gas with significant climate impact-or ammonia, which contributes to air and water quality degradation and ecosystem damage.

These losses represent both an environmental liability and an economic inefficiency within the supply chain.

How Enhanced Efficiency Fertilizer Works

The product evaluated in the study is a dual urease and nitrification inhibitor added to conventional fertilizers. It slows the chemical conversion of urea and ammonium in the soil, extending the window during which nitrogen remains available in the crop root zone.

By delaying nitrogen transformation, plants have more time to absorb nutrients before they are lost to volatilization or denitrification. The result can be improved fertilizer use efficiency, lower emissions, and potentially stable or improved yields.

However, researchers found that soil texture, drainage capacity, and regional climate patterns strongly influence outcomes. In lighter, sandier soils typical of eastern North Carolina, emission reductions were more pronounced compared to heavier soils inland.

Balancing Yields, Costs, and Incentives

For growers, the decision to adopt enhanced efficiency fertilizers hinges on cost-benefit analysis. These inhibitors add to per-acre fertilizer expenses at a time when margins are sensitive to swings in commodity prices and global supply chain pressures.

The study suggests that in soils where emission reductions are greatest, farmers may be able to reduce nitrogen application rates without sacrificing yields, improving both profitability and sustainability metrics.

That has broader implications for federal and state policy. As USDA conservation programs and future farm bill discussions increasingly focus on climate-smart agriculture, verified emission reductions could position farmers to access incentive payments, carbon markets, or crop insurance benefits tied to environmental performance.

Implications for U.S. Agriculture

Nitrogen management remains one of the most critical levers for improving nutrient use efficiency in U.S. row-crop systems. With regulatory scrutiny rising and lenders, grain buyers, and co-ops demanding sustainability metrics, tools that quantify both environmental and economic returns are gaining importance.

The NC State findings provide field-level data that policymakers can use when evaluating whether to subsidize enhanced efficiency fertilizers or integrate them into conservation compliance programs.

For farmers, the takeaway is clear: soil-specific data and precision agriculture tools will be essential in determining whether enhanced efficiency fertilizers deliver measurable returns on investment.

As the industry works to balance productivity, environmental stewardship, and financial resilience, nitrogen efficiency remains central to the future of sustainable U.S. agriculture.