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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/3783
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dc.contributor.authorMartins, Marcio dos Reis-
dc.contributor.authorAngers, Denis A.-
dc.contributor.authorCora, Jose Eduardo-
dc.date.accessioned2014-05-20T13:17:14Z-
dc.date.accessioned2016-10-25T16:38:44Z-
dc.date.available2014-05-20T13:17:14Z-
dc.date.available2016-10-25T16:38:44Z-
dc.date.issued2012-03-01-
dc.identifierhttp://dx.doi.org/10.2136/sssaj2011.0110-
dc.identifier.citationSoil Science Society of America Journal. Madison: Soil Sci Soc Amer, v. 76, n. 2, p. 475-484, 2012.-
dc.identifier.issn0361-5995-
dc.identifier.urihttp://hdl.handle.net/11449/3783-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/3783-
dc.description.abstractIn no-till systems, plants play a substantial role in soil physical conditioning because physical management is otherwise confined to sowing operations. We performed a study to determine the effect of 28 different crop sequences on soil water-stable aggregation, soil organic C (SOC), and the neutral carbohydrate composition of the surface layer (0-5-cm depth) of an Oxisol under no-till. Summer crop sequences with corn (Zea mays L.) on a continuous basis or in rotation with soybean [Glycine max (L.) Merr.] showed a higher mean weight diameter (MWD) of water-stable aggregates than those with a rice (Oryza sativa L.)-bean (Phaseolus vulgaris L.)-cotton (Gossypium hirsutum L.) rotation. Among winter crops, pearl millet [Pennisetum americanum (L.) Leeke] or grain sorghum [Sorghum bicolor (L.) Moench] were associated with a higher MWD than oilseed radish (Raphanus sativus L. var. oleiformis Pers.). Plant tissues of Poaceae species (corn, pearl millet, and sorghum) were enriched in pentoses relative to other plant species. A principal component analysis showed a close positive relationship of the soil aggregate MWD with the soil xylose content, but not with other soil monosaccharide and SOC contents, and a positive relationship with the amount of pentose input to the soil, notably from aboveground plant materials. A possible explanation is that pentosans are used as an energy source by filamentous microorganisms, which play a well-known role in stabilizing soil aggregates. Our results suggest that plant-derived carbohydrates mediate crop species effects on soil structure under no-till conditions, and this effect appears to be independent of changes in total SOC.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.format.extent475-484-
dc.language.isoeng-
dc.publisherSoil Sci Soc Amer-
dc.sourceWeb of Science-
dc.titleCarbohydrate Composition and Water-Stable Aggregation of an Oxisol as Affected by Crop Sequence under No-Tillen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionAgr & Agri Food Canada-
dc.description.affiliationSão Paulo State Univ, Dep Soil Sci, BR-14884900 Jaboticabal, SP, Brazil-
dc.description.affiliationAgr & Agri Food Canada, Soils & Crops Res & Dev Ctr, Quebec City, PQ G1V 2J3, Canada-
dc.description.affiliationUnespSão Paulo State Univ, Dep Soil Sci, BR-14884900 Jaboticabal, SP, Brazil-
dc.description.sponsorshipIdFAPESP: 08/57755-5-
dc.description.sponsorshipIdCAPES: 1193/09-0-
dc.identifier.doi10.2136/sssaj2011.0110-
dc.identifier.wosWOS:000300644400016-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofSoil Science Society of America Journal-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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