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Evolution of maize residues into SOM in a study of two years incubation. Author(s): SONG, G. X.; NOVOTNY, E. H.; HAYES, M. H. B. Maize (Zea mays, a C4 plant) stover was incubated in a long-term cultivated soil for 24 months in order to better understand the transformation of crop residues into soil organic matter. Humic fractio... ... Repository: BDPA Publication year: 2018
Selective extraction of the characteristic humic fraction from Terras Pretas de Índios. Author(s): NOVOTNY, E. H.; VELLOSO, M. H. R.; BONAGAMBA, T. J.; SONG, G.; HAYES, M. H. B. Repository: BDPA Publication year: 2010
Extração seletiva da fração húmica característica das terras pretas de índios. Author(s): NOVOTNY, E. H.; VELLOSO, M. H. R.; AZEVEDO, E. R. de; BONAGAMBA, T. J.; SONG, G.; HAYES, M. H. B. As Terras Pretas de Índios (TPI), encontradas na Amazônia, são solos extremamente férteis e ricos em carbono, e essa fertilidade se mantém no tempo a despeito do seu uso (resiliência). Essas caracterí... ... Repository: BDPA Publication year: 2009
Lessons from the Terra Preta de Índios of the Amazon region for the utilisation of charcoal for soil amendment. Author(s): NOVOTNY, E. H.; HAYES, M. H. B.; MADARI, B. E.; BONAGAMBA, T. J.; AZEVEDO, E. R. de; SOUZA, A. A. de; SONG, G.; NOGUEIRA, C. M.; MANGRICH, A. S. Neste trabalho faz-se a divulgação do potencial de carvões e resíduos orgânicos parcialmente carbonizados visando obter materiais que mimetizam a matéria orgânica do solo das Terras Pretas de Índio da... ... Repository: BDPA Publication year: 2009
Char and humin fractions in Amazonian dark earths. Author(s): SONG, G.; NOVOTNY, E. H.; HAYES, M. H. B.; AZEVEDO, E. R. de; BONAGAMBA, T. J. The high and specific SOM contents of the Amazonian Dark Earths (ADE, Terra Preta de Índios), and their high contents of P and Ca provide high natural fertility to the soils. Char or black carbon (B C... ... Repository: BDPA Publication year: 2008
Extraction and characterisation of humin fraction from Amazonian anthropogenic dark earth soils ("Terra Preta de Indios"). Author(s): NOVOTNY, E. H.; HAYES, M. H. B.; SONG, G.; AZEVEDO, E. R. de; BONAGAMBA, T. Humin, the humic fraction that is insoluble in water at all pH values, typically comprises more than 50% of soil organic matter (1). Because of the difficulties in isolation, humin compositions and pr... ... Repository: BDPA Publication year: 2008
Composition of the humin fraction and coarse char of Terra Preta de Índios soils by NMR, multivariate curve resolution and scanning electron microscopy. Author(s): SONG, G.; NOVOTNY, E. H.; AZEVEDO, E. R. de; BONAGAMBA, T. J. The high and specific soil organic matter (SOM) contents of the Amazonian Dark Earths (Terra Preta de Índios), and their high contents of P and Ca provide high natural fertility to the soils. Biochar... ... Repository: BDPA Publication year: 2008
Análise espectroscópica por ressonância magnética nuclear de 13C de huminas de terras pretas de índio. Author(s): NOVOTNY, E. H.; HAYES, M. H. B.; SONG, G.; AZEVEDO, E. R. de; BONAGAMBA, T. J. Repository: BDPA Publication year: 2007
Extração da fração humina e análise espectroscópica por ressonância magnética nuclear (RMN) de 13C. Author(s): SONG, G.; NOVOTNY, E. H.; HAYES, M. H. B.; BONAGAMBA, T. J.; AZEVEDO, E. R. de Repository: BDPA Publication year: 2007

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