Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114374
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dc.contributor.authorZANATTA, J. A.eng
dc.contributor.authorVIEIRA, F. C. B.eng
dc.contributor.authorBRIEDIS, C.eng
dc.contributor.authorDIECKOW, J.eng
dc.contributor.authorBAYER, C.eng
dc.date.accessioned2019-11-14T18:26:12Z-
dc.date.available2019-11-14T18:26:12Z-
dc.date.created2019-11-14
dc.date.issued2019
dc.identifier.citationScientia Agricola, Piracicaba, v. 76, n. 6, p. 501-508, Nov./Dec. 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1114374-
dc.descriptionManagement systems to improve soil quality are essential for agricultural and environmental sustainability. We assessed the quality of soil management systems applied to a subtropical Acrisol in terms of the carbon management index (CMI), the stratification ratio for total organic carbon (SR-TOC) and light fraction of organic matter (SR-LF). In addition, we examined their relationship to chemical, physical and biological soil quality indicators, as well as to maize yield. The study was conducted on a long-term experiment (18 years) in southern Brazil involving two different systems [no tillage (NT) and conventional tillage (CT)], two cropping systems [black oat/maize (O/M) and black oat + vetch/maize + cowpea (OV/MC)] and two nitrogen fertilizer rates for maize (0 and 180 kg ha?1). Based on the three indices, the best managements for soil quality comprised NT (50-212 % better than CT), legume cover crops (10-47 % better than O/M) and N fertilization (8-33 % better than no fertilizer). All three indices proved accurate to assess the impact of soil management systems, especially SR-LF, which showed increased sensitivity and close relationships with chemical, physical and biological soil quality indicators. On the other hand, a poor relationship was observed between soil C indices and maize yield, which was improved only by legume cover crops and N fertilization. The results showed that the association of no-till system to an abundant supply of crop residues is key to ensure high soil quality and crop yields in humid subtropical regions.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectConservation agricultureeng
dc.subjectNo-tilleng
dc.subjectQuality indicatoreng
dc.subjectAgricultura conservativaeng
dc.titleCarbon indices to assess quality of management systems in a Subtropical Acrisol.eng
dc.typeArtigo de periódicoeng
dc.date.updated2019-11-14T18:26:12Z
dc.subject.thesagroCarbonoeng
dc.subject.nalthesaurusCropping systemseng
dc.subject.nalthesaurusCarboneng
riaa.ainfo.id1114374eng
riaa.ainfo.lastupdate2019-11-14
dc.identifier.doihttp://dx.doi.org/10.1590/1678-992X-2017-0322eng
dc.contributor.institutionJOSILEIA ACORDI ZANATTA, CNPF; FREDERICO COSTA BEBER VIEIRA, UNIVERSIDADE FEDERAL DO PAMPA; CLEVER BRIEDIS, BOLSISTA NA EMBRAPA INSTRUMENTAÇÃO; JEFERSON DIECKOW, UNIVERSIDADE FEDERAL DO PARANÁ; CIMÉLIO BAYER, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL.eng
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