Nitrate Reductase, Micronutrients and Upland Rice Development as Influenced by Soil pH and Nitrogen Sources

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dc.contributor.authorMoro, Edemar
dc.contributor.authorCrusciol, Carlos Alexandre Costa [UNESP]
dc.contributor.authorNascente, Adriano Stephan
dc.contributor.authorCantarella, Heitor
dc.contributor.authorBroetto, Fernando [UNESP]
dc.contributor.authorMoro, Adriana Lima
dc.contributor.institutionUniversidade do Oeste Paulista–UNOESTE
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionInstituto Agronômico de Campinas
dc.date.accessioned2018-12-11T17:17:00Z
dc.date.available2018-12-11T17:17:00Z
dc.date.issued2017-12-16
dc.description.abstractThe average yield of upland rice under no-tillage system (NTS), a sustainable soil management, is lower than in conventional tillage (one plowing and two disking). One of the reasons given for this drop in crop grain yield would be the low-nitrate assimilation capacity of rice seedlings, due to the low activity of the nitrate reductase (NR) enzyme in the early development phase. A greenhouse experiment was conducted to evaluate the effects of the soil acidic and nitrogen source in the micronutrient concentrations, NR activity and grain yield of upland rice growing under NTS. The soil used in the experiment was an Oxisol. The experimental design was completely randomized in a factorial 3 × 4. Treatments consisted of three levels of soil acidity (high, medium, and low) combined with four nitrogen sources (nitrate, ammonium, ammonium + nitrification inhibitor, and control–without N fertilization). The reduction of soil acidity reduced the concentration of zinc and manganese in rice plants. Generally, the activity of the NR enzyme was higher in plants grown in soils with low acidity and fertilized with calcium nitrate. There was a greater response in growth and yield in rice plants grown in soils with high acidity. Under medium acidity, rice plants grown with ammonium sulfate were more productive (no differences were detected with the addition of the nitrification inhibitor).en
dc.description.affiliationDepartamento de Agronomia Universidade do Oeste Paulista–UNOESTE Campus II
dc.description.affiliationFaculdade de Ciências Agronômicas Departamento de Produção Vegetal (Agricultura) Universidade Estadual Paulista (UNESP)
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária (Embrapa Arroz e Feijão)
dc.description.affiliationCentro de Solos e Recursos Ambientais Instituto Agronômico de Campinas
dc.description.affiliationDepartamento de Química e Bioquímica Universidade Estadual Paulista (UNESP) Instituto de Biociências
dc.description.affiliationUnespFaculdade de Ciências Agronômicas Departamento de Produção Vegetal (Agricultura) Universidade Estadual Paulista (UNESP)
dc.description.affiliationUnespDepartamento de Química e Bioquímica Universidade Estadual Paulista (UNESP) Instituto de Biociências
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2008/05573-0
dc.description.sponsorshipIdFAPESP: 2008/05641-6
dc.format.extent2642-2651
dc.identifierhttp://dx.doi.org/10.1080/00103624.2017.1416137
dc.identifier.citationCommunications in Soil Science and Plant Analysis, v. 48, n. 22, p. 2642-2651, 2017.
dc.identifier.doi10.1080/00103624.2017.1416137
dc.identifier.file2-s2.0-85038630774.pdf
dc.identifier.issn1532-2416
dc.identifier.issn0010-3624
dc.identifier.scopus2-s2.0-85038630774
dc.identifier.urihttp://hdl.handle.net/11449/175668
dc.language.isoeng
dc.relation.ispartofCommunications in Soil Science and Plant Analysis
dc.relation.ispartofsjr0,341
dc.relation.ispartofsjr0,341
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAmmonium
dc.subjectnitrate
dc.subjectOryza sativa
dc.subjectsoil acidity
dc.subjectsoil fertility
dc.subjectyield
dc.titleNitrate Reductase, Micronutrients and Upland Rice Development as Influenced by Soil pH and Nitrogen Sourcesen
dc.typeArtigo
unesp.author.lattes9281484833327774[2]
unesp.author.lattes3964089477817663[5]
unesp.author.orcid0000-0002-3343-4388[1]
unesp.author.orcid0000-0003-4673-1071[2]
unesp.author.orcid0000-0002-6014-3797[3]
unesp.author.orcid0000-0002-1894-3029[4]
unesp.author.orcid0000-0002-8316-4144[5]
unesp.author.orcid0000-0001-7708-911X[6]
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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