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In 2022, agricultural activities were responsible for 9.4% of total gross U.S. greenhouse gas emissions. Agriculture sector emissions decreased by 1.9% since 2021 to reach their lowest value since 2012. These emissions have increased by 7.7% since 1990, mostly from trends in enteric fermentation and manure management. Methane emissions from enteric fermentation and manure management represented 36.6% of total CH4 emissions from anthropogenic activities in 2022.
Agricultural soil management activities, such as application of synthetic and organic fertilizers, deposition of livestock manure, and growing N-fixing plants, were the largest contributors to U.S. N2O emissions in 2022, accounting for 74.6% of total N2O emissions. Carbon dioxide emissions from the application of crushed limestone and dolomite (i.e., soil liming) and urea fertilization represented 0.2% of total CO2 emissions from anthropogenic activities.
April 11, 2024/ United States Environmental Protection Agency/ United States.
https://www.epa.gov
