Nitrogen source contribution in sugarcane-inoculated plants with diazotrophic bacterias under urea-N fertigation management

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dc.contributor.authorCastro Gava, Glauber Jose de [UNESP]
dc.contributor.authorScarpare, Fabio Vale
dc.contributor.authorCantarella, Heitor
dc.contributor.authorKolln, Oriel Tiago
dc.contributor.authorRuiz-Correa, Simone Toni
dc.contributor.authorArlanch, Adolfo Bergamo [UNESP]
dc.contributor.authorOcheuze Trivelin, Paulo Cesar
dc.contributor.institutionAgencia Paulista Tecnol Agronegocios
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionIAC
dc.date.accessioned2019-10-04T12:37:52Z
dc.date.available2019-10-04T12:37:52Z
dc.date.issued2019-06-01
dc.description.abstractAlthough Brazilian sugarcane crops use lower nitrogen rates when compared to other producing countries, the biological nitrogen fixation (BFN) could be performed aiming to reduce costs, since almost all nitrogen fertilization used in Brazil is imported. BFN can occur in sugarcane; however, its role in non-leguminous plants is controversial. Therefore, this study aimed to assess the nitrogen source contribution (using N isotope N-15 technique) along a growing period in sugarcane plants under different management (diazotrophic bacteria inoculation and N fertigation rates). The natural abundance of nitrogen isotope (N-15) abundance in +1 leaves of fourth ratoon cultivar SP 80-3280 was used to indicate the comparative importance of N sources, including BFN for sugarcane nutrition. The treatments were irrigated with two levels of nitrogen fertilizer 50 and 100kgha(-1) (urea source), including a control without fertilizer, with (I) and without (NI) inoculation of nitrogen-fixing bacterias. The bacteria cocktail used consisted of five strains: Gluconacetobacter diazotrophicus, Herbaspirillum seropedicae, H. rubrisubalbicans, Burkholderia tropica and Azospirillum amazonense. Although the nitrogen content in +1 leaves, the above ground dry matter, cane yield and stalk sugar content expanded by increasing nitrogen fertilizer rates, no significant interactions between nitrogen-fixing bacteria inoculation and nitrogen fertilizer rates were observed. In the treatment without N fertilizer application, no differences in N-15 parts per thousand (per thousand) values between sugarcane-inoculated and sugarcane-non-inoculated sugarcane leaves was found. The temporal variation of N-15 parts per thousand in sugarcane +1 leaves indicated that nitrogen content and N-15 parts per thousand values decreased during the phenological development stages and that the main sources of nitrogen for sugarcane were from synthetic fertilizer and mineralization of nitrogen from soil organic matter.en
dc.description.affiliationAgencia Paulista Tecnol Agronegocios, Unidade Pesquisa & Desenvolvimento Helio de Morae, Rodovia SP 304, BR-17201970 Jau, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Programa Posgrad Irrigacao & Drenagem, Rua Jose Barbosa de Barros 1780, BR-18610307 Botucatu, SP, Brazil
dc.description.affiliationUniv Sao Paulo, CENA, Av Centenario 303, BR-13416000 Piracicaba, SP, Brazil
dc.description.affiliationUniv Estadual Campinas UNICAMP, FEM, BR-13083860 Campinas, SP, Brazil
dc.description.affiliationIAC, Av Barao de Itapura 1481, BR-13020902 Campinas, SP, Brazil
dc.description.affiliationUniv Sao Paulo, ESALQ, Piracicaba, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Programa Posgrad Irrigacao & Drenagem, Rua Jose Barbosa de Barros 1780, BR-18610307 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2008/56147-1
dc.format.extent462-470
dc.identifierhttp://dx.doi.org/10.1007/s12355-018-0614-2
dc.identifier.citationSugar Tech. New Delhi: Springer India, v. 21, n. 3, p. 462-470, 2019.
dc.identifier.doi10.1007/s12355-018-0614-2
dc.identifier.issn0972-1525
dc.identifier.urihttp://hdl.handle.net/11449/185709
dc.identifier.wosWOS:000467589500011
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofSugar Tech
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectIsotope fractionation
dc.subjectSubsurface drip irrigation
dc.subjectBiological nitrogen fixation
dc.subjectTemporal N-15 variation
dc.subjectNitrogen fertilizer
dc.subjectCrop management
dc.subjectFertilization
dc.titleNitrogen source contribution in sugarcane-inoculated plants with diazotrophic bacterias under urea-N fertigation managementen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.departmentEngenharia Rural - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas