Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Rev. Ciênc. Agron. (1) Rev. Bras. Ciênc. Solo (1) Autor Alcântara,Flávia Aparecida de (2) Bustamante,Mercedes Maria da Cunha (1) Carvalho,Arminda Moreira de (1) Coser,Thais Rodrigues (1) Figueiredo,Cícero Célio de (1) Madeira,Nuno Rodrigo (1) Marchão,Robélio Leandro (1) Souza,Rodrigo Fernandes de (1) Mais... Palavra-chave Brazilian Savanna (1) Ecological Intensification (1) Humic fractions (1) Microbial biomass (1) Organic carbon (1) Organic matter (1) Oxidizable fractions (1) Solid-state CPMAS 13C NMR spectroscopy (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Effect of management systems and cover crops on organic matter dynamics of soil under vegetables Rev. Bras. Ciênc. Solo Souza,Rodrigo Fernandes de; Figueiredo,Cícero Célio de; Madeira,Nuno Rodrigo; Alcântara,Flávia Aparecida de. Vegetable production in conservation tillage has increased in Brazil, with positive effects on the soil quality. Since management systems alter the quantity and quality of organic matter, this study evaluated the influence of different management systems and cover crops on the organic matter dynamics of a dystrophic Red Latosol under vegetables. The treatments consisted of the combination of three soil tillage systems: no-tillage (NT), reduced tillage (RT) and conventional tillage (CT) and of two cover crops: maize monoculture and maize-mucuna intercrop. Vegetables were grown in the winter and the cover crops in the summer for straw production. The experiment was arranged in a randomized block design with four replications. Soil samples were collected... Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic carbon; Oxidizable fractions; Microbial biomass; Humic fractions. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300024 Characterization of cover crops by NMR spectroscopy: impacts on soil carbon, nitrogen and phosphorus under tillage regimes Rev. Ciênc. Agron. Carvalho,Arminda Moreira de; Marchão,Robélio Leandro; Bustamante,Mercedes Maria da Cunha; Alcântara,Flávia Aparecida de; Coser,Thais Rodrigues. The objective of this study was to investigate the chemical composition of cover crops by solid-state CPMAS 13C NMR spectroscopy and its effects on carbon, nitrogen and phosphorus in a Typic Acrustox. Cover crops (Crotalaria juncea, Canavalia brasiliensis, Cajanus cajan, Mucuna pruriens and Raphanus sativus) and natural fallow were studied in rotation with maize under conventional and no-tillage regimes. Tissues of Crotalaria juncea, Canavalia brasiliensis, Mucuna pruriens and Raphanus sativus were analyzed using CPMAS 13C NMR spectroscopy. Soil samples were collected at the end of the growing season of the cover crops (September 2002) and during the grain filling period in corn from 0-5 and 5-10 cm layers. Cajanus cajan presented the lowest content of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Savanna; Solid-state CPMAS 13C NMR spectroscopy; Organic matter; Ecological Intensification. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500012 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