Can silicon applied to correct soil acidity in combination with Azospirillum brasilense inoculation improve nitrogen use efficiency in maize?

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dc.contributor.authorGalindo, Fernando Shintate [UNESP]
dc.contributor.authorPagliari, Paulo Humberto
dc.contributor.authorBuzetti, Salatier [UNESP]
dc.contributor.authorRodrigues, Willian Lima [UNESP]
dc.contributor.authorKondo Santini, Jose Mateus
dc.contributor.authorMarcandalli Boleta, Eduardo Henrique [UNESP]
dc.contributor.authorLeonel Rosa, Poliana Aparecida [UNESP]
dc.contributor.authorRodrigues Nogueira, Thiago Assis [UNESP]
dc.contributor.authorLazarini, Edson [UNESP]
dc.contributor.authorMinhoto Teixeira Filho, Marcelo Carvalho [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Minnesota
dc.contributor.institutionColl Objet
dc.date.accessioned2020-12-10T20:00:30Z
dc.date.available2020-12-10T20:00:30Z
dc.date.issued2020-04-08
dc.description.abstractAlternative management practices are needed to minimize the need for chemical fertilizer use in non-leguminous cropping systems. The use of biological agents that can fix atmospheric N has shown potential to improve nutrient availability in grass crops. This research was developed to investigate if inoculation with Azospirillum brasilense in combination with silicon (Si) can enhance N use efficiency (NUE) in maize. The study was set up in a Rhodic Hapludox under a no-till system, in a completely randomized block design with four replicates. Treatments were tested in a full factorial design and included: i) five side dress N rates (0 to 200 kg ha(-1)); ii) two liming sources (Ca and Mg silicate and dolomitic limestone); and iii) with and without seed inoculation with A. brasilense. Inoculation with A. brasilense was found to increase grain yield by 15% when N was omitted and up to 10% when N was applied. Inoculation also increased N accumulation in plant tissue. Inoculation and limestone application were found to increase leaf chlorophyll index, number of grains per ear, harvest index, and NUE. Inoculation increased harvest index and NUE by 9.5 and 19.3%, respectively, compared with non-inoculated plots. Silicon application increased leaf chlorophyll index and N-leaf concentration. The combination of Si and inoculation provided greater Si-shoot accumulation. This study showed positive improvements in maize growth production parameters as a result of inoculation, but the potential benefits of Si use were less evident. Further research should be conducted under growing conditions that provide some level of biotic or abiotic stress to study the true potential of Si application.en
dc.description.affiliationSao Paulo State Univ, Dept Plant Hlth Rural Engn & Soils, Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Minnesota, Southwest Res & Outreach Ctr, Dept Soil Water & Climate, Lamberton, MN USA
dc.description.affiliationColl Objet, Higher Educ Inst Rio Verde, Rio Verde, Go, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Plant Hlth Rural Engn & Soils, Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2017/06002-6
dc.description.sponsorshipIdCNPq: 312359/2017-9
dc.format.extent20
dc.identifierhttp://dx.doi.org/10.1371/journal.pone.0230954
dc.identifier.citationPlos One. San Francisco: Public Library Science, v. 15, n. 4, 20 p., 2020.
dc.identifier.doi10.1371/journal.pone.0230954
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11449/196921
dc.identifier.wosWOS:000535967600023
dc.language.isoeng
dc.publisherPublic Library Science
dc.relation.ispartofPlos One
dc.sourceWeb of Science
dc.titleCan silicon applied to correct soil acidity in combination with Azospirillum brasilense inoculation improve nitrogen use efficiency in maize?en
dc.typeArtigo
dcterms.rightsHolderPublic Library Science
unesp.author.orcid0000-0003-2303-3465[10]
unesp.departmentFitossanidade, Engenharia Rural e Solos - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia