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	Provedor de dados 90 (2) Autor Amado,Telmo Jorge Carneiro (2) Bayer,Cimélio (2) Chavez,Luis Fernando (2) Escobar,Luisa Fernanda (2) Fiorin,Jackson Ernani (2) Campos,Ben-Hur Costa de (1) La Scala,Newton Junior (1) Zanatta,Josiléia Acordi (1) Mais... Palavra-chave Greenhouse gases (2) Crop rotation (1) Global warming (1) No-till (1) Soil moisture (1) Soil temperature (1) Soil tillage (1) Subtropical soils (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2010 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Carbon dioxide efflux in a rhodic hapludox as affected by tillage systems in southern Brazil 90 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 Postharvest nitrous oxide emissions from a subtropical oxisol as influenced by summer crop residues and their management 90 Escobar,Luisa Fernanda; Amado,Telmo Jorge Carneiro; Bayer,Cimélio; Chavez,Luis Fernando; Zanatta,Josiléia Acordi; Fiorin,Jackson Ernani. Nitrous oxide (N2O) is the most important non-CO2 greenhouse gas and soil management systems should be evaluated for their N2O mitigation potential. This research evaluated a long-term (22 years) experiment testing the effect of soil management systems on N2O emissions in the postharvest period (autumn) from a subtropical Rhodic Hapludox at the research center FUNDACEP, in Cruz Alta, state of Rio Grande do Sul. Three treatments were evaluated, one under conventional tillage with soybean residues (CTsoybean) and two under no-tillage with soybean (NTsoybean) and maize residues (NTmaize). N2O emissions were measured eight times within 24 days (May 2007) using closed static chambers. Gas flows were obtained based on the relations between gas concentrations in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Global warming; Subtropical soils; Greenhouse gases; Soil tillage; Crop rotation. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000200024 Registros recuperados: 2 Primeira ... 1 ... Última

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