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	Provedor de dados Acta Agron. (Palmira) (1) Bragantia (1) Rev. Bras. Ciênc. Solo (1) Autor Andrade,Cristiano Alberto de (1) Barros,Nairam Félix de (1) Carvalho,Cristina Silva (1) Pereira,Marcos Gervasio (1) Pires,Adriana Marlene Moreno (1) Ramos,Nilza Patrícia (1) Rossi,Celeste Queiroz (1) Silva Rodrigues Pinto,Luiz Alberto (1) Silva,Ivo Ribeiro da (1) Silva,Sérgio Ricardo (1) Sá Mendonça,Eduardo de (1) Telles de Moura,Octávio Vioratti (1) Yamaguchi,Carina Sayuri (1) da Costa Barros,Fabiana (1) Mais... Palavra-chave Carbon mineralization (3) Biogenic aggregates (1) Microbial biomass carbon (1) Net N mineralization (1) Nitrogen (1) Respiration (1) Soil bulk density (1) Waste (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2018 (1) 2017 (1) 2011 (1) País Brazil (2) Colombia (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última 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 Evolution and accumulation of C-CO2 in biogenic and physiogenic aggregates of different agroecological management systems Acta Agron. (Palmira) Silva Rodrigues Pinto,Luiz Alberto; Telles de Moura,Octávio Vioratti; Rossi,Celeste Queiroz; Pereira,Marcos Gervasio; da Costa Barros,Fabiana. Abstract Determination of mineralizable carbon (C) is based on the evolution of C-CO2, reflecting the activity of soil biota in soil organic matter (SOM) decomposition, and can be used as a testing parameter in agroecological production systems. The objective of the present work was to quantify mineralizable C in aggregates of different biogenic and physiogenic formation pathways in agroecological management systems in the city of Seropédica, state of Rio de Janeiro. Five sampling areas were selected: (1) 10-year agroforestry system (AFS), (2) 15-year full sun coffee (C-SUN), (3) 15-year shaded coffee (C-SHA), (4) 10-year Flemingia macrophylla (FLE), and (5) 6-year no-till planting system with corn and eggplant (NT) in Red-Yellow Argisol in Seropédica-RJ.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biogenic aggregates; Carbon mineralization; Respiration. Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000400494 Sugarcane straw decomposition and carbon balance as a function of initial biomass and vinasse addition to soil surface Bragantia Yamaguchi,Carina Sayuri; Ramos,Nilza Patrícia; Carvalho,Cristina Silva; Pires,Adriana Marlene Moreno; Andrade,Cristiano Alberto de. ABSTRACT The objective of this study was to evaluate sugarcane straw decomposition and the potential of increasing soil carbon as a function of the initial biomass and vinasse addition to soil surface. The experimente consisted of incubation (240 days, in the dark, humidity equivalent to 70% of soil water retention capacity and average temperature of 28 °C) of Oxisol soil samples (0-20 cm soil layer) with straw added to soil surface at rates of 2; 4; 8; 16 and 24 t∙ha−1 and with or without vinasse addition (200 m3∙ha-1). The following variables were determined: released C-CO2, remaining straw dry matter, carbon straw and soil carbon concentration. The added biomass did not influence straw decomposition rate, but vinasse treatments provided rates between 70... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon mineralization; Nitrogen; Waste. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100135 Registros recuperados: 3 Primeira ... 1 ... Última

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