Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1020254
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorNASCENTE, A. S.pt_BR
dc.contributor.authorLI, Y.pt_BR
dc.contributor.authorCRUSCIOL, C. A. C.pt_BR
dc.date.accessioned2015-07-22T11:11:11Zpt_BR
dc.date.available2015-07-22T11:11:11Zpt_BR
dc.date.created2015-07-22pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationRevista Brasileira de Ciência do Solo, Viçosa, MG, v. 39, n. 3, p. 871-879, maio/jun. 2015.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1020254pt_BR
dc.descriptionSoil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleSoil aggregation, organic carbon concentration, and soil bulk density as affected by cover crop species in a no-tillage system.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-29T11:11:11Zpt_BR
dc.subject.thesagroManejo do solopt_BR
dc.subject.thesagroBrachiaria brizanthapt_BR
dc.subject.thesagroBrachiaria ruziziensispt_BR
dc.subject.thesagroPlantio diretopt_BR
dc.subject.thesagroPanicum maximumpt_BR
dc.subject.thesagroPennisetum glaucumpt_BR
riaa.ainfo.id1020254pt_BR
riaa.ainfo.lastupdate2016-03-29pt_BR
dc.identifier.doi10.1590/01000683rbcs20140388pt_BR
dc.contributor.institutionADRIANO STEPHAN NASCENTE, CNPAF; YUNCONG LI, UNIVERSITY OF FLORIDA; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPAF)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
asn.pdf231,63 kBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace