Total soil carbon and chemical attributes under different land uses in the Brazilian savanna


Autoria(s): SIQUEIRA NETO, Marcos; PICCOLO, Marisa de Cassia; SCOPEL, Eric; COSTA JUNIOR, Ciniro da; CERRI, Carlos Clemente; BERNOUX, Martial
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2009

Resumo

Total soil carbon and chemical attributes under different land uses in the Brazilian savanna. The Brazilian savanna region (Cerrado) is one of the largest cultivated areas of the world. The different land uses in the region can effectively change the quantities of soil organic matter and the cycling of nutrients. I-lie objective of this study was to evaluate the effect of different land use management systems on the relationship between soil organic carbon and the soil chemical attributes of a Red Latosol (Oxisol) under Cerrado in Rio Verde (Goias state). The treatments studied were native vegetation (cerrado), low-productivity pasture, conventional tillage with soybean, and no-tillage with soybean and maize. The smallest values for pH, available P, K, Ca and Mg were observed for the Cerradao treatment, even if the relatively high C levels increased the potential soil cation exchange capacity. The pasture, conventional tillage and no-tillage treatments showed higher K, Ca, Mg, available 13, and S concentrations in the soil. In the areas where soil tillage did not take place and lime and fertilizers were applied superficially, the stratification of the soil organic carbon provides the retention of the elements near to the surface, with significance correlations with the soil chemicals attributes.

Identificador

ACTA SCIENTIARUM-AGRONOMY, v.31, n.4, p.709-717, 2009

1679-9275

http://producao.usp.br/handle/BDPI/16946

10.4025/actasciagroti.v31i4.792

http://dx.doi.org/10.4025/actasciagroti.v31i4.792

Idioma(s)

por

Publicador

UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO

Relação

Acta Scientiarum-agronomy

Direitos

restrictedAccess

Copyright UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO

Palavras-Chave #soil fertility #no-tillage #conventional tillage #pasture #soybean #ORGANIC-MATTER #FOREST CONVERSION #LIME APPLICATION #SOUTHERN BRAZIL #CERRADO SOILS #NO-TILL #SEQUESTRATION #PASTURE #SYSTEMS #FERTILIZATION #Agronomy
Tipo

article

original article

publishedVersion