Challenges for Global Sustainable Nitrogen Management in Agricultural Systems

• DOI: 10.1021/acs.jafc.0c00273
• Publication Date: 2020-03-04T17:33:36Z
• Authors: Lei Liu; Xiuying Zhang; Wen Xu; Xuejun Liu; Yi Li; Jing Wei; Meng Gao; Jian Bi; Xuehe Lu; Zhen Wang; Xiaodi Wu
• Keywords: 2. Zero hunger; China; Nitrogen; Agriculture; 04 agricultural and veterinary sciences; 15. Life on land; 6. Clean water; 12. Responsible consumption; Europe; Manure; Soil; 13. Climate action; Humans; 0401 agriculture, forestry, and fisheries; Fertilizers

Nitrogen (N) losses from agricultural production contribute to detrimental impacts on water, soil, air, and human health. However, it is still lacking in evaluating global N budgets systems. Hence, we conducted a analysis the current status of flows systems, explored possible mitigation measures challenges, investigated existing regulations controlling pollution. Globally, soils received total 73 kg ha–1 year–1 average, including fertilizer plus manure (61%), atmospheric deposition (10%), litters fixation (29%). The estimated NH3 loss inputs was 17%, which led $15 billion year–1. use efficiency (NUE) Eastern China (33%) much lower than that United States (65%) or Western Europe leaving room enhance NUE increase food production. Meanwhile, higher fertilizers were found (22%) (17%) (17%). We highlight urgency improve decrease with environmental consequences. Our results showed high potentials mitigate volatilization by various measures, such as substituting for chemical N, applying controlled release fertilizers, urease inhibitors. These should be implemented combination transfer knowledge farmers new technologies increasing farm size future.