Phosphorus fractions in Brazilian Cerrado soils as affected by tillage

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dc.contributor.authorPavinato, Paulo Sergio
dc.contributor.authorMerlin, Alexandre [UNESP]
dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.institutionUniversidade Tecnológica Federal do Paraná (UTFPR)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:20:15Z
dc.date.available2014-05-20T13:20:15Z
dc.date.issued2009-09-01
dc.description.abstractNo-tillage systems lead to physical, chemical and biological changes in soil. Soil fertility is responsive to changes in tillage as it depends on nutrient status, soil water content and biological characteristics. This work aimed to determine long term changes in phosphorus forms and availability in the profile of two tropical soils under conventional and no-till systems, and to discuss the significance of these changes on plant growth and demand for P fertilizers. Undisturbed soil cores with 20 cm in diameter were collected to a depth of 40 cm, accommodated in PVC tubes and taken to a greenhouse, where the experiment was conducted. Two soils were collected in Central Brazil, in areas under Cerrado. Both soils had been cropped for at least 10 years under conventional tillage and no-till. In the greenhouse, pots received phosphorus fertilization or not at 43.7 kg ha(-1), and soybean was grown for 60 days, when soil P fractions were determined. Labile P fractions in the soil profile were not affected by management systems, and there was no accumulation of available P under no-till. A large amount of P added as fertilizer was adsorbed in soil and remained in moderately labile fractions, mainly on uppermost soil layers. Therefore, the phosphate fertilizer has promoted P accumulation on less available fractions in soil, remaining P on the soil after crop harvest. Eventually this phosphorus could migrate to more labile fractions and be available for crops grown in succession. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationTechnol Fed Univ Parana, BR-85660000 Dois Vizinhos, PR, Brazil
dc.description.affiliationSão Paulo State Univ, BR-18603970 Botucatu, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, BR-18603970 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent149-155
dc.identifierhttp://dx.doi.org/10.1016/j.still.2009.07.001
dc.identifier.citationSoil & Tillage Research. Amsterdam: Elsevier B.V., v. 105, n. 1, p. 149-155, 2009.
dc.identifier.doi10.1016/j.still.2009.07.001
dc.identifier.issn0167-1987
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.urihttp://hdl.handle.net/11449/5605
dc.identifier.wosWOS:000270863000020
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSoil & Tillage Research
dc.relation.ispartofjcr3.824
dc.relation.ispartofsjr1,703
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectNo-tillen
dc.subjectOrganic phosphorusen
dc.subjectAvailable phosphorusen
dc.subjectPhosphorus fractionationen
dc.titlePhosphorus fractions in Brazilian Cerrado soils as affected by tillageen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes5720775873259528[3]
unesp.author.orcid0000-0003-3244-2666[1]
unesp.author.orcid0000-0003-2001-0874[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas