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| Chavez,Luis Fernando; Amado,Telmo Jorge Carneiro; Bayer,Cimélio; La Scala,Newton Junior; Escobar,Luisa Fernanda; Fiorin,Jackson Ernani; Campos,Ben-Hur Costa de. |
| Agricultural soils can act as a source or sink of atmospheric C, according to the soil management. This long-term experiment (22 years) was evaluated during 30 days in autumn, to quantify the effect of tillage systems (conventional tillage-CT and no-till-NT) on the soil CO2-C flux in a Rhodic Hapludox in Rio Grande do Sul State, Southern Brazil. A closed-dynamic system (Flux Chamber 6400-09, Licor) and a static system (alkali absorption) were used to measure soil CO2-C flux immediately after soybean harvest. Soil temperature and soil moisture were measured simultaneously with CO2-C flux, by Licor-6400 soil temperature probe and manual TDR, respectively. During the entire month, a CO2-C emission of less than 30 % of the C input through soybean crop residues... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-till; Greenhouse gases; Soil temperature; Soil moisture. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000200010 |
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