Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados BJM (1) R. Bras. Zootec. (1) Autor Nahas,Ely (2) Garcia,Martha Regina Lucizano (1) Sampaio,Alexandre Amstalden Moraes (1) Tavares,Rose Luiza Moraes (1) Palavra-chave Potential nitrification (2) Cellulase (1) Humification (1) Microbial biomass carbon (1) Microbial respiratory activity (1) Phosphatase (1) Respiratory activity (1) Urease (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Impact of different grazing systems for bovine cattle on the soil microbiological and chemical characteristics R. Bras. Zootec. Garcia,Martha Regina Lucizano; Sampaio,Alexandre Amstalden Moraes; Nahas,Ely. The objective of this work was to study the effect of grazing systems: rotational, continuous and the absence of cattle, in pastures of Brachiaria brizantha on microbial activity (respiratory, potential nitrification, solubilizing, and enzymatic) and on the chemical attributes (contents of organic carbon, total nitrogen, organic phosphorus, and moisture) of Eutrustox soil over one year. Eight Canchim breed animals were used. The samples were collected in the four seasons from 2005 to 2006. The average of organic C, organic P, and moisture contents, as well as potential nitrification and solubilizing activity and urease and acid phosphatase activities were significantly higher in the spring and/or summer than in autumn and/or winter. The total nitrogen... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cellulase; Microbial respiratory activity; Phosphatase; Potential nitrification; Urease. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700024 Humic fractions of forest, pasture and maize crop soils resulting from microbial activity BJM Tavares,Rose Luiza Moraes; Nahas,Ely. Humic substances result from the degradation of biopolymers of organic residues in the soil due to microbial activity. The objective of this study was to evaluate the influence of three different ecosystems: forest, pasture and maize crop on the formation of soil humic substances relating to their biological and chemical attributes. Microbial biomass carbon (MBC), microbial respiratory activity, nitrification potential, total organic carbon, soluble carbon, humic and fulvic acid fractions and the rate and degree of humification were determined. Organic carbon and soluble carbon contents decreased in the order: forest > pasture > maize; humic and fulvic acids decreased in the order forest > pasture=maize. The MBC and respiratory activity were not... Tipo: Info:eu-repo/semantics/article Palavras-chave: Humification; Microbial biomass carbon; Potential nitrification; Respiratory activity. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300028 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco