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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Barros,Nairam Félix de (1) Franco,Henrique Coutinho Junqueira (1) Leite,José Marcos (1) Mariano,Eduardo (1) Megda,Michele Xavier Vieira (1) Otto,Rafael (1) Silva,Ivo Ribeiro da (1) Silva,Sérgio Ricardo (1) Sá Mendonça,Eduardo de (1) Trivelin,Paulo Cesar Ocheuze (1) Mais... Palavra-chave Net N mineralization (2) Aerobic incubation (1) Anaerobic incubation (1) Carbon mineralization (1) Microbial biomass carbon (1) Saccharum spp. (1) Soil bulk density (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2013 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Incubation methods for assessing mineralizable nitrogen in soils under sugarcane Rev. Bras. Ciênc. Solo Mariano,Eduardo; Trivelin,Paulo Cesar Ocheuze; Leite,José Marcos; Megda,Michele Xavier Vieira; Otto,Rafael; Franco,Henrique Coutinho Junqueira. Considering nitrogen mineralization (N) of soil organic matter is a key aspect for the efficient management of N fertilizers in agricultural systems. Long-term aerobic incubation is the standard technique for calibrating the chemical extraction methods used to estimate the potentially mineralizable N in soil. However, the technique is laborious, expensive and time-consuming. In this context, the aims of this study were to determine the amount of soil mineralizable N in the 0-60 cm layer and to evaluate the use of short-term anaerobic incubation instead of long-term aerobic incubation for the estimation of net N mineralization rates in soils under sugarcane. Five soils from areas without previous N fertilization were used in the layers 0-20, 20-40 and 40-60... Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp.; Net N mineralization; Aerobic incubation; Anaerobic incubation. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000200016 Effect of compaction on microbial activity and carbon and nitrogen transformations in two oxisols with different mineralogy Rev. Bras. Ciênc. Solo Silva,Sérgio Ricardo; Silva,Ivo Ribeiro da; Barros,Nairam Félix de; Sá Mendonça,Eduardo de. The use of machinery in agricultural and forest management activities frequently increases soil compaction, resulting in greater soil density and microporosity, which in turn reduces hydraulic conductivity and O2 and CO2 diffusion rates, among other negative effects. Thus, soil compaction has the potential to affect soil microbial activity and the processes involved in organic matter decomposition and nutrient cycling. This study was carried out under controlled conditions to evaluate the effect of soil compaction on microbial activity and carbon (C) and nitrogen (N) mineralization. Two Oxisols with different mineralogy were utilized: a clayey oxidic-gibbsitic Typic Acrustox and a clayey kaolinitic Xantic Haplustox (Latossolo Vermelho-Amarelo ácrico - LVA,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil bulk density; Carbon mineralization; Net N mineralization; Microbial biomass carbon. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400007 Registros recuperados: 2 Primeira ... 1 ... Última

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