Por favor, use este identificador para citar o enlazar este ítem: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111397
Registro completo de metadatos
Campo DCValorLengua/Idioma
dc.contributor.authorPACHECO, R. S.eng
dc.contributor.authorALVES, B. J. R.eng
dc.contributor.authorBODDEY, R. M.eng
dc.contributor.authorFERREIRA, E. P. de B.eng
dc.contributor.authorSTRALIOTTO, R.eng
dc.contributor.authorARAUJO, A. P.eng
dc.date.accessioned2019-08-17T00:40:10Z-
dc.date.available2019-08-17T00:40:10Z-
dc.date.created2019-08-16
dc.date.issued2019
dc.identifier.citationIn: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings... Viçosa, MG: SBCS, 2019. v. 2, p. 492. WCSS 2018., 2018eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1111397-
dc.descriptionThe aim of this study was to estimate the BNF contribution for plant N nutrition by NA method in eight common bean cultivars with different agronomical traits at field conditions. The 15N natural abundance method (NA) can be used for distinguishing among the N from soil and air in N2-fixing plants and thus to estimate the contribution of biological nitrogen fixation (BNF). The aim of this study was to estimate the BNF contribution for plant N nutrition by NA method in eight common bean cultivars with different agronomical traits at field conditions. Two field experiments were carried out in an Oxisol at Brazilian Cerrado biome, with eight common bean cultivars inoculated with Rhizobium. The NA method was used to estimate BNF in plant shoots at mid-pod filling and in grains at physiological maturity. Three non-fixing plants were used as reference and the assumed B value was -1.2. The same bean cultivars grew under mineral N (90 kg ha-1 as urea) to estimate their yield potential without N limitations. Averaged grain yield was 1614 and 2942 kg ha-1 in the Experiment I, and 3284 and 3919 kg ha-1 in the Experiment II, respectively, under inoculation or mineral N. None cultivar under rhizobium inoculation surpassed the grain yield provided by mineral N in both experiments. The 15N natural abundance (δ15N) in non-fixing reference plants was 5.49‰ in the Experiment I and 4.88‰ in the Experiment II. In Experiment I, the contribution of N derived from atmosphere (%Ndfa) reached a maximum of 25% in shoots at mid-pod filling, while varied from 18 to 35% in grains at maturity. In Experiment II, the %Ndfa ranged from 7 and to 50% in shoots and 29 to 51% in grains. In Experiment I, the N2 fixation was estimated as 6.7 kg ha-1 in shoots, averaged across all cultivars, and ranged from 6.42 to 17.89 kg ha-1 in grains. In Experiment II, the lowest amount of N2 fixed in shoots was 2.5 kg ha-1 and the highest 31.3 kg ha-eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectRhizobia inoculationeng
dc.titleMeasurement of biological N2 fixation in field-grown common bean cultivars in Brazilian Cerrado soil using 15N natural abundance method.eng
dc.typeResumo em anais e proceedingseng
dc.date.updated2019-08-17T00:40:10Z
dc.subject.thesagroFeijãoeng
dc.subject.thesagroFixação de Nitrogênioeng
dc.subject.thesagroPhaseolus Vulgariseng
riaa.ainfo.id1111397eng
riaa.ainfo.lastupdate2019-08-16
dc.contributor.institutionBRUNO JOSE RODRIGUES ALVES, CNPAB; ROBERT MICHAEL BODDEY, CNPAB.eng
Aparece en las colecciones:Resumo em anais de congresso (CNPAB)

Ficheros en este ítem:
Fichero Descripción TamañoFormato 
WorldCongressofsoilscience2019.pdf346,16 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro sencillo del ítem

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace