Soil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio) in the Brazilian Amazon basin.

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dc.contributorTONY JARBAS FERREIRA CUNHA, CPATSA
dc.contributorBEATA EMOKE MADARI, CNPAF
dc.contributorLUCIANO PASQUALOTO CANELLAS, UNIVERSIDADE DO NORTE FLUMINENSE
dc.contributorLUCEDINO PAIXÃO RIBEIRO, UNIVERSIDADE FEDERAL DA BAHIA
dc.contributorVINICIUS DE MELO BENITES, CNPS
dc.contributorGABRIEL DE ARAÚJO SANTOS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO.
dc.creatorCUNHA, T. J. F.
dc.creatorMADARI, B. E.
dc.creatorCANELLAS, L. P.
dc.creatorRIBEIRO, L. P.
dc.creatorBENITES, V. de M.
dc.creatorSANTOS, G. de A.
dc.date2011-04-10T11:11:11Z
dc.date2011-04-10T11:11:11Z
dc.date2009-03-18
dc.date2009
dc.date2018-07-13T11:11:11Z
dc.date.accessioned2026-07-07T05:35:48Z
dc.descriptionFertility properties, total C (Ctot), and chemical soil organic matter fractions (fulvic acid fraction – FA, humic acid fraction – HA, humin fraction – H) of anthropogenic dark earths (Terra Preta de Índio) of the Amazon basin were compared with those of Ferralsols with no anthropogenic A horizon. Terra Preta soils had a higher fertility (pH: 5.1-5.4; Sum of bases, SB: 8.93-10.33 cmolc kg-1, CEC: 17.2-17.5 cmolc kg-1, V: 51-59 %, P: 116-291 mg kg-1) and Ctot (44.6-44.7 g kg-1) than adjacent Ferralsols (pH: 4.4; SB: 2.04 cmolc kg-1, CEC: 9.5 cmolc kg-1, V: 21 %, P 5 mg kg-1, C: 37.9 g kg-1). The C distribution among humic substance fractions (FA, HA, H) in Terra Preta soils was also different, as shown by the ratios HA:FA and EA/ H (EA=HA+FA) (2.1-3.0 and 1.06-1.08 for Terra Preta and 1.2 and 0.72 for Ferralsols, respectively). While the cation exchange capacity (CEC), of Ferralsols correlated with FA (r = 0.97), the CEC of Terra Preta correlated with H (r = 0.82). The correlation of the fertility of Terra Preta with the highly stable soil organic matter fraction (H) is highly significant for the development of sustainable soil fertility management models in tropical ecosystems.
dc.identifierRevista Brasileira de Ciência do Solo, v. 33. n. 1, p. 85-93, 2009.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/161864
dc.identifier.urihttp://hdl.handle.net/123456789/496073
dc.languageeng
dc.rightsopenAccess
dc.subjectSubstância húmica
dc.subjectFração humina
dc.subjectBacia Amazônica
dc.subjectCarbono
dc.subjectFertilidade
dc.subjectMatéria Orgânica
dc.subjectManejo
dc.subjectSolo
dc.subjectSoil
dc.titleSoil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio) in the Brazilian Amazon basin.
dc.typeArtigo de periódico

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