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Journal of Undergraduate Research

Keywords

relative reductions, nitrous oxide, ammonia gas emissions, polymer coated urea, photoacoustic gas

College

Life Sciences

Department

Plant and Wildlife Sciences

Abstract

Farmers typically apply relatively high rates of nitrogen (N) fertilizers, often in excess. This is because N is the mineral nutrient most commonly deficient in agricultural soils. Soil-plant system inefficiencies prevent complete utilization of the N, leaving residual N in the soil, wasting natural resources and causing environmental concern. To compensate for inefficiencies and improve crop yield, supplementing crops with N fertilizers has long been understood to be integral. Nitrogen fertilizer accounts for 40% of the per capita increase in food production in the last half-century, and is the source of 40% of the world’s dietary protein.

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