Data/hora: 11/06/2024 04:45:20

Provedor de dados: | 52
País: | Brazil
Título: | Relationship between the mass of organic matter and carbon in soil
Autores: | Bianchi,Silmara R.; Miyazawa,Mario; Oliveira,Edson L. de; Pavan,Marcos Antonio.
Data: | 2008-04-01
Ano: | 2008
Palavras-chave: | Organic carbon; Tropical soils; Soil analysis.
Resumo: | The quantity of soil organic matter (SOM) was estimated through the determination of soil organic carbon (SOC) times a factor, which assumes that 58% of the SOM was formed by carbon. A number of soil samples with wide range of SOC content collected in the state of Paraná, Brazil were evaluated in the laboratory. SOC was measured by Walkley-Black method and the total SOM by loss on ignition. The SOC was positively correlated with SOM. The SOM/SOC ratio varied from 1.91 to 5.08 for the soils. It shows that Brazilian SOM has greater oxidation degree. Although, the SOM and SOC decreased with soil depth the SOM/SOC ratio increased. It showed that SOM in the subsoil contained more oxygen but less carbon than the SOM in the upper soil surface. The CEC/SOC also increased with depth indicating that the functional groups of the SOM increased per unity of carbon.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200005
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132008000200005
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.51 n.2 2008
Fonte: | info:eu-repo/semantics/openAccess