Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/979298
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dc.contributor.authorFRANZINI, V. I.pt_BR
dc.contributor.authorMENDES, F. L.pt_BR
dc.contributor.authorMURAOKA, T.pt_BR
dc.contributor.authorTREVISAM, A. R.pt_BR
dc.contributor.authorADU-GYAMFI, J. J.pt_BR
dc.date.accessioned2014-02-10T11:11:11Zpt_BR
dc.date.available2014-02-10T11:11:11Zpt_BR
dc.date.created2014-02-10pt_BR
dc.date.issued2013pt_BR
dc.identifier.citationIn: OPTIMIZING productivity of food crop genotypes in low nutrient soils. Vienna: FAO: IAEA, 2013.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/979298pt_BR
dc.descriptionCommon bean (Phaseolus vulgaris L.) represents the main source of protein for the Brazilian and other Latin-American populations. Unlike soybean, which is very efficient in fixing atmospheric N2 symbiotically, common bean does not dispense with the need for N fertilizer application, as the biologically fixed N (BNF) seems incapable to supplement the total N required by the crop. A experiment under controlled conditions was conducted in Piracicaba, Brazil, to assess N2 fixation of 25 genotypes of common bean (Phaseolus vulgaris L.). BNF was measured by 15N isotope dilution using a non-N2 fixing bean genotype as a reference crop. The common bean genotypes were grown in low (2.2 mg N kg-1 soil) or high N content soil (200 mg N kg-1 soil), through N fertilizer application, as urea-15N (31.20 and 1.4 atom % 15N, respectively). The bean seeds were inoculated with Rhizobium tropici CIAT 899 strain and the plants were harvested at grain maturity stage. The contribution of BNF was on average 75% of total plant N content, and there were differences in N fixing capacity among the bean genotypes. The most efficient genotypes were Horizonte, Roxo 90, Grafite, Aporé and Vereda, when grown in high N soil. None of the genotypes grown in low N soil was efficient in producing grains compared to those grown in high N soil, and therefore the BNF was not able to supply the total N demand of the bean crop.pt_BR
dc.language.isoengeng
dc.relation.ispartofseries(IAEA Tecdoc, 1721).pt_BR
dc.rightsopenAccesseng
dc.titleBiological nitrogen fixation efficiency in brazilian common bean genotypes as measured by 15N methodology.pt_BR
dc.typeParte de livropt_BR
dc.date.updated2017-05-31T11:11:11Zpt_BR
dc.subject.thesagroFeijãopt_BR
dc.subject.thesagroGenótipopt_BR
dc.subject.thesagroNitrogêniopt_BR
dc.format.extent2p. 299-309.pt_BR
riaa.ainfo.id979298pt_BR
riaa.ainfo.lastupdate2017-05-31pt_BR
dc.contributor.institutionVINICIUS IDE FRANZINI, CPATU; CPATU; CENA/USP; CENA/USP; International Atomic Energy Agency.pt_BR
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