Biological nitrogen fixation and prospects for ecological intensification in cereal-based cropping systems

dc.creatorLadha, J.K.
dc.creatorPeoples, M.B.
dc.creatorReddy, P.M.
dc.creatorBiswas, J.C.
dc.creatorBennett, A.
dc.creatorJat, M.L.
dc.creatorKrupnik, T.J.
dc.date2022-05-05T00:25:19Z
dc.date2022-05-05T00:25:19Z
dc.date2022
dc.date.accessioned2023-07-17T20:09:09Z
dc.date.available2023-07-17T20:09:09Z
dc.identifierhttps://hdl.handle.net/10883/22062
dc.identifier10.1016/j.fcr.2022.108541
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7513827
dc.descriptionThe demand for nitrogen (N) for crop production increased rapidly from the middle of the twentieth century and is predicted to at least double by 2050 to satisfy the on-going improvements in productivity of major food crops such as wheat, rice and maize that underpin the staple diet of most of the world's population. The increased demand will need to be fulfilled by the two main sources of N supply – biological nitrogen (gas) (N2) fixation (BNF) and fertilizer N supplied through the Haber-Bosch processes. BNF provides many functional benefits for agroecosystems. It is a vital mechanism for replenishing the reservoirs of soil organic N and improving the availability of soil N to support crop growth while also assisting in efforts to lower negative environmental externalities than fertilizer N. In cereal-based cropping systems, legumes in symbiosis with rhizobia contribute the largest BNF input; however, diazotrophs involved in non-symbiotic associations with plants or present as free-living N2-fixers are ubiquitous and also provide an additional source of fixed N. This review presents the current knowledge of BNF by free-living, non-symbiotic and symbiotic diazotrophs in the global N cycle, examines global and regional estimates of contributions of BNF, and discusses possible strategies to enhance BNF for the prospective benefit of cereal N nutrition. We conclude by considering the challenges of introducing in planta BNF into cereals and reflect on the potential for BNF in both conventional and alternative crop management systems to encourage the ecological intensification of cereal and legume production.
dc.languageEnglish
dc.publisherElsevier
dc.relationhttps://www.sciencedirect.com/science/article/pii/S0378429022001125?via%3Dihub#sec0145
dc.relationNutrition, health & food security
dc.relationTransforming Agrifood Systems in South Asia
dc.relationResilient Agrifood Systems
dc.relationUnited States Agency for International Development
dc.relationBill & Melinda Gates Foundation
dc.relationhttps://hdl.handle.net/10568/126447
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source283
dc.source0378-4290
dc.sourceField Crops Research
dc.source108541
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectSymbiotic Nitrogen Fixation
dc.subjectNon-Symbiotic Nitrogen Fixation
dc.subjectDiazotrophs
dc.subjectCrop Nitrogen Nutrition
dc.subjectCEREALS
dc.subjectCROP PRODUCTION
dc.subjectFERTILIZER APPLICATION
dc.subjectGROWTH RATE
dc.subjectLEGUMES
dc.subjectNITROGEN CYCLE
dc.subjectNITROGEN FIXATION
dc.subjectNITROGEN FIXING BACTERIA
dc.titleBiological nitrogen fixation and prospects for ecological intensification in cereal-based cropping systems
dc.typeArticle
dc.typePublished Version
dc.coverageAmsterdam (Netherlands)


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