Data/hora: 04/06/2024 21:58:47

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Cerrados.
Data corrente: | 15/10/2014
Data da última atualização: | 29/12/2014
Autoria: | SATO, J. H.; FIGUEIREDO, C. C. de; MARCHÃO, R. L.; MADARI, B. E.; BENEDITO, L. E. C.; BUSATO, J. G.; SOUZA, D. M. de.
Afiliação: | JULIANA HIROMI SATO, UNB; CÍCERO CÉLIO DE FIGUEIREDO, UNB; ROBELIO LEANDRO MARCHAO, CPAC; BEATA EMOKE MADARI, CNPAF; LUIZ EDUARDO CELINO BENEDITO, UNB; JADER GALBA BUSATO, UNB; DIEGO MENDES DE SOUZA, CNPAF.
Título: | Methods of soil organic carbon determination in Brazilian savannah soils.
Ano de publicação: | 2014
Fonte/Imprenta: | Scientia Agricola, Piracicaba, v. 71, n. 4, p. 302-308, July/Aug. 2014.
DOI: | 10.1590/0103-9016-2013-0306
Idioma: | Inglês

Conteúdo:

Several methods exist for determining soil organic carbon, and each one has its own advantages and limitations. Consequently, a comparison of the experimental results obtained
when these methods are employed is hampered, causing problems in the comparison of carbon stocks in soils. This study aimed at evaluating the analytical procedures used in the
determination of carbon and their relationships with soil mineralogy and texture. Wet combustion methods, including Walkley-Black, Mebius and Colorimetric determination as well as dry combustion methods, such as Elemental and Gravimetric Analysis were used. Quantitative textural and mineralogical (kaolinite, goethite and gibbsite) analyses were also carried out. The wet digestion methods underestimated the concentration of organic carbon, while the gravimetric method overestimated. Soil mineralogy interfered with the determination of carbon, with emphasis on the gravimetric method that was greatly influenced by gibbsite.

Thesagro: | Carbono; Cerrado; Matéria orgânica; Solo orgânico.
Thesaurus Nal: | Carbon; Combustion; Soil organic matter.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/109976/1/sa.pdf
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

CNPAF - (33039-1) - UPC - AP - PP - 2014.061 -  - 2014.061 - DIS
CPAC - (34293-1) - UPC - AP - PP -  -  -  - DIS