Biological nitrogen fixation: A key input to integrated soil fertility management in the tropics

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dc.creatorAmede, Tilahun
dc.creatorAmézquita Collazos, Edgar
dc.creatorAshby, Jacqueline A.
dc.creatorAyarza, Miguel Angel
dc.creatorBarrios, Edmundo
dc.creatorBationo, B. André
dc.creatorBeebe, Stephen E.
dc.creatorBellotti, Anthony C.
dc.creatorBlair, Matthew W.
dc.creatorDelve, Robert J.
dc.creatorFujisaka, Sam
dc.creatorHoweler, Reinhardt H.
dc.creatorJohnson, Nancy L.
dc.creatorKaaria, Susan K.
dc.creatorKelemu, Segenet
dc.creatorKerridge, Peter C.
dc.creatorKirkby, Roger A.
dc.creatorLascano Aguilar, Carlos Eduardo
dc.creatorLefroy, Rod D.B.
dc.creatorMahuku, George S.
dc.creatorMurwira, Herbert K.
dc.creatorOberthür, Thomas
dc.creatorPachico, Douglas H.
dc.creatorPeters, Michael
dc.creatorRamisch, Joshua J.
dc.creatorRao, Idupulapati M.
dc.creatorRondón, Marco Antonio
dc.creatorSanginga, Pascal C.
dc.creatorSwift, M.
dc.creatorVanlauwe, Bernard
dc.date2003
dc.date2016-11-22T15:31:56Z
dc.date2016-11-22T15:31:56Z
dc.date.accessioned2026-06-27T14:36:53Z
dc.descriptionThis paper describes the importance of biological nitrogen fixation (BNF) by legumeRhizobium symbiosis to tropical agriculture, the evolution of BNF paradigms, creation of strategic alliances to combat soil fertility degradation, and accomplishments of collaborative BNF-related research at CIAT-TSBFI. It suggests that a holistic-multidisciplinary-systems approach is needed to integrate BNFefficient arid stress adapted legumes into smallholder systems. It proposes a number of research and development priorities for achieving improved BNF contributions through integrated soil fertility management, a holistic approach to soil fertility that includes all driving factors and consequences of soil degradation. Although BNF has not proved a solution for strain selection or breeding of host, modest progress has been registered. The technology is economically viable. The environment is at least as limiting on BNF as is the strain and the host. The benefits of BNF are best expressed in the context of an agronomic management system that addresses other components of the crop, especially P supply, drought stress and frequently, starter N. Selection for BNF capacity under physiological stress has revealed genotypes worth exploiting more fully. Research efforts on BNF in tropical forage legumes indicated that the main constraints to their widespread adoption include a lack of legume persistence, presence of anti-quality factors such as tannins, variable Bradyrhizobium requirements, and a lack of acceptability by farmers. Farmerparticipatory selection of legumes for increased acceptability is needed. Substantial progress was made in creating an organic resource database and using it to construct a decision support system for organic matter management. Analysis of organic resource data indicated a set of critical values of nitrogen, lignin and polyphenol content for predicting the "fertilizer equivalence" of organic inputs. This provides armers with guidelines for appropriate use of organic materials for soil fertility improvement. The paper also suggests key interventions that are needed to achieve greater impact of legume-BNF technologies
dc.identifierhttps://hdl.handle.net/10568/77819
dc.identifier.urihttp://hdl.handle.net/123456789/83256
dc.languageen
dc.publisherInstitut National de Recherche Agronomique
dc.publisherInternational Crops Research Institute for the Semi-Arid Tropics
dc.rightsOpen Access
dc.sourceAmede, Tilahun; Amézquita Collazos, Edgar; Ashby, Jacqueline Anne; Ayarza, Miguel Angel; Barrios, Edmundo; Bationo, André; Beebe, Stephen E.; Bellotti, Anthony C.; Blair, Matthew W.; Delve, Robert J.; Fujisaka, Sam; Howeler, Reinhardt H.; Johnson, Nancy L.; Kaaria, Susan K.; Kelemu, Segenet; Kerridge, Peter C.; Kirkby, Roger Alexander; Lascano, Carlos E.; Lefroy, Rod; Mahuku, George S.; Murwira, Herbert K.; Oberthür, Thomas; Pachico, Douglas H.; Peters, Michael; Ramisch, Joshua J.; Rao, Idupulapati Madhusudana; Rondón, Marco Antonio; Sanginga, Pascal C.; Swift, M.; Vanlauwe, Bernard. 2003. Biological nitrogen fixation: A key input to integrated soil fertility management in the tropics. In: Workshop on Biological Nitrogen Fixation for Increased Crop Productivity, Enhanced Human Health and Sustained Soil Fertility (2002, Montpellier, France). Papers presented. Institut National de Recherche Agronomique (INRA); Patancheru, IN: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Montpellier, FR. p. 113-143.
dc.subjectnitrogen fixation
dc.subjectsoil fertility
dc.subjectlegumes
dc.subjectrhizobium
dc.subjectsymbiosis
dc.subjectsoil degradation
dc.subjectfijación del nitrógeno
dc.subjectfertilidad del suelo
dc.subjectleguminosas
dc.subjectsimbiosis
dc.subjectdegradación del suelo
dc.titleBiological nitrogen fixation: A key input to integrated soil fertility management in the tropics
dc.typeBook Chapter

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Centro Internacional de Agricultura Tropical (CIAT)