Iowa proposes a pilot program to reduce statewide use of commercial nitrogen fertilizers

The Iowa Statehouse is currently evaluating a bill that would introduce a pilot program designed to curb the average statewide use of commercial nitrogen fertilizers. The proposed legislation, known as House Study Bill 165, recently received approval from the Iowa House Agriculture Committee. The bill mandates the Iowa Department of Agriculture and Land Stewardship (IDALS) to oversee and develop a four-year study focusing on fertilizer usage across Iowa’s croplands.

The program, as outlined by State Representative David Sieck, who played a pivotal role in advancing the bill, aims to explore innovative practices that could supplement or replace traditional nitrogen-rich fertilizers. “This initiative is not just about reducing nitrogen usage but also enhancing the efficiency of current fertilization methods to combat non-point source water pollution,” Sieck explained to KMA News.

Additionally, the legislation proposes a $2 million allocation from the general fund for fiscal year 2026 to support the program. This funding would provide financial incentives to participating farmers, ensuring a minimum compensation of $5 per acre farmed during the study period.

The ultimate goal of this pilot program is to achieve a 15% reduction in the statewide use of nitrogen fertilizers, equivalent to 30 pounds per acre. This effort aligns with IDALS’s ongoing strategies to minimize nitrogen applications, which include promoting a free calculator developed by the Iowa Nitrogen Initiative that aids farmers in optimizing nitrogen usage on their farms.