Total soil carbon and chemical attributes under different land uses in the Brazilian savanna
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/10/2012
18/10/2012
2009
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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 |
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 |