Exploring the potential for nitrogen fertilizer use mitigation with bundles of management interventions

19552 11 105411 2 320623 document 105411 Folberth_2024_Environ._Res._Lett._19_044027.pdf application/pdf fc778fdae7d143b553b249e4a5de80a1 MD5 2037495 2024-04-02 14:24:34 https://pure.iiasa.ac.at/id/eprint/19552/1/Folberth_2024_Environ._Res._Lett._19_044027.pdf 19552 1 1 application/pdf text en public cc_by_4

Folberth_2024_Environ._Res._Lett._19_044027.pdf

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/105411 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/105411 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/105411 archive 353 disk0/00/01/95/52 2024-03-13 10:28:00 2025-03-12 05:00:55 2024-03-13 10:28:00 article show Folberth C. 2033 0000-0002-6738-5238 Wood S. Wironen M. Jung M. 2245 0000-0002-7569-1390 Boucher T. Bossio D. Obersteiner M. 7255 0000-0001-6981-2769 Exploring the potential for nitrogen fertilizer use mitigation with bundles of management interventions pub ASA EM BNR AFE BEC Mineral nitrogen (N) fertilizer use is essential to maintain high-yielding cropping systems that presently provide food for nearly half of humanity. Simultaneously, it causes a range of detrimental impacts such as greenhouse gas emissions, eutrophication, and contamination of drinking water. There is growing recognition of the need to balance crop production with the impacts of fertilizer use. Here we provide a global assessment of the potential to reduce mineral fertilizer use through four interventions: capping surpluses, enhancing manure cycling to cropland, cultivation of off-season green manures, and cycling of human excreted N to cropland. We find that the combined potential of these interventions is a reduction in global N fertilizer use by 21-52%. The availability of interventions is spatially heterogeneous with most cropland having three to four interventions available with alternative N sources tending to be more abundant on cropland already receiving fertilizer. Our assessment highlights that these locally in part already practiced interventions bear great opportunities to mitigate synthetic N use and dependency globally. Yet, their limited adoption underpins the need for cross-sectoral policies to overcome barriers to their implementation and agronomic research on their robust scaling. 2024-03-08 published Institute of Physics Publishing (IOP) doi:10.1088/1748-9326/ad31d8 92 3143 219 public Environmental Research Letters 19 4 e044027 TRUE 1748-9326 no info:eu-repo/semantics/article