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| Registros recuperados : 309 | |
| 102. |  | CARVALHO, A. M. de; BALIZA, D. F.; TREVISAN, W. L.; GUIMARÃES, R. J.; FERREIRA, A. D. Utilização de mudas de raízes múltiplas na implantação de lavouras cafeeiras. Coffee science, Lavras, v. 4, n. 1, p. 76-83, jan./jun. 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 105. | | BOTELHO, C. E.; REZENDE, J. C. de; CARVALHO, G. R.; CARVALHO, A. M. de; ANDRADE, V. T.; BARBOSA, C. R. Adaptabilidade e estabilidade fenotípica de cultivares de café arábica em Minas Gerais. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 12, p. 1404-1411, dez. 2010 Título em inglês: Adaptability and phenotype stability of Arabica coffee cultivars in Minas Gerais, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 106. | | CARVALHO, A. M. de; PRADO, J. S. M.; MIRANDA, L. N. de; RAMOS, M. L. G.; RIBEIRO JUNIOR, W. Q. Adubação verde no Cerrado. In: LIMA FILHO, O. F. de; AMBROSANO, E. J.; ROSSI, F.; CARLOS, J. A. D. (Ed.). Adubação verde e plantas de cobertura no Brasil: fundamentos e prática. Brasília, DF: Embrapa, 2014. v. 2 p. 343-372| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 107. | | SILVA, E. C. da; AMBROSANO, E. J.; SCIVITTARO, W. B.; MURAOKA, T.; BUZETTI, S.; CARVALHO, A. M. de. Adubação verde como fonte de nutrientes às culturas. In: LIMA FILHO, O. F. de; AMBROSANO, E. J.; ROSSI, F.; CARLOS, J. A. D. (Ed.). Adubação verde e plantas de cobertura no Brasil: fundamentos e prática. Brasília, DF: Embrapa, 2014. v. 1 p. 265-305| Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Clima Temperado. |
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| 109. | | CARVALHO, A. M. de; MARCHAO, R. L.; BUSTAMANTE, M. M. da C.; ALCANTARA, F. A. de; COSER, T. R. Characterization of cover crops by NMR spectroscopy: impacts on soil carbon, nitrogen and phosphorus under tilage regimes. Revista Ciência Agronômica, v. 45, n. 5, p. 968-975, 2014.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 113. | | CARVALHO, G. R.; BOTELHO, C. E.; BARTHOLO, G. F.; PEREIRA, A. A.; NOGUEIRA, A. M.; CARVALHO, A. M. de. Comportamento de progênies F4 obtidas por cruzamentos de Icatu com Catimor. Ciência e Agrotecnologia, v. 33, n. 1, p. 47-52, jan./fev., 2009. Título em inglês: Behavior of F4 progenies obtained from crossing of Icatu with Catimor.| Biblioteca(s): Embrapa Café. |
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| 115. | | PULROLNIK, K.; VILELA, L.; MARCHAO, R. L.; SOUZA, K. W. de; GUIMARAES JUNIOR, R.; CARVALHO, A. M. de. Soil carbon contents in integrated crop-livestock-forest and crop-livestock system in the Cerrado region. In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 492-495.| Biblioteca(s): Embrapa Cerrados. |
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| 117. | | MACHADO, C. T. de T.; PEREIRA, C. D.; FLORIANO, P. R. C.; RIBEIRO, L. R. P.; CARVALHO, A. M. de. Glomalina e número de esporos de fungos micorrízicos arbusculares no cultivo de milho em sucessão a plantas de cobertura. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2012.| Biblioteca(s): Embrapa Cerrados. |
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| 118. | | SATO, J. H.; MARCHAO, R. L.; FIGUEIREDO, C. C. de; VILELA, L.; OLIVEIRA, A. D. de; CARVALHO, A. M. de. How Soil Organic Carbon Fractions Affect N2O Emissions in a Long-Term Integrated Crop-Livestock System: A Case Study. In: DATTA, R.; MEENA, R. S. (org.). Soil Carbon Stabilization to Mitigate Climate Change. New York: Springer Singapore, 2021. v. 01, p. 307-332.| Biblioteca(s): Embrapa Cerrados. |
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| 119. | | DANTAS, R. DE A.; CARVALHO, A. M. de; MIRANDA, J. C. C. DE.; MIRANDA, L. N. DE. Influência de doses de fósforo e de fungos micorrízicos arbusculares no rendimento de matéria seca do milho (Zea mays L.). In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. 1 CD-ROM. FERTBIO 2010.| Biblioteca(s): Embrapa Cerrados. |
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| 120. | | CARNEIRO, R. G.; MENDES, I. de C.; LOVATO, P. E.; CARVALHO, A. M. de; VIVALDI, L. J. Indicadores biológicos associados ao ciclo do fósforo em solos de Cerrado sob plantio direto e plantio convencional. Pesquisa Agropecuária Brasileira, Brasília, v.39, n. 7, p. 661-669, jul. 2004.| Biblioteca(s): Embrapa Cerrados; Embrapa Unidades Centrais. |
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| Registros recuperados : 309 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
15/04/2015 |
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Data da última atualização: |
07/03/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
CARVALHO, A. M. de; MARCHAO, R. L.; BUSTAMANTE, M. M. da C.; ALCANTARA, F. A. de; COSER, T. R. |
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Afiliação: |
ARMINDA MOREIRA DE CARVALHO, CPAC; ROBELIO LEANDRO MARCHAO, CPAC; MERCEDES MARIA DA CUNHA BUSTAMANTE; FLAVIA APARECIDA DE ALCANTARA, CNPAF; THAIS RODRIGUES COSER. |
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Título: |
Characterization of cover crops by NMR spectroscopy: impacts on soil carbon, nitrogen and phosphorus under tilage regimes. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista Ciência Agronômica, v. 45, n. 5, p. 968-975, 2014. |
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ISSN: |
1806-6690 |
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Idioma: |
Inglês |
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Conteúdo: |
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 polysaccharides and along with Mucuna pruriens presented the highest percentage of aromatic carbon compounds, reflecting the slow decomposition of highly lignified material. Carbon stocks were higher in the superficial soil layer and under no-tillage due to the accumulation and slower decomposition of plant tissues under these conditions. Increases in the C/N ratio of the soil with Mucuna pruriens and the C/P ratio with Cajanus cajan in the dry season were also related to slower rates of decomposition, caused by the large concentration of aromatic compounds in the tissues of these species. The higher C/P ratios found at 0-5 cm layer are due to higher values of P (Mehlich-1) at 5-10 cm (25 mg kg-1) layer and the higher concentration of carbon in the superficial soil layer as a result of the accumulation of plant residues. MenosThe 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 polysaccharides and along with Mucuna pruriens presented the highest percentage of aromatic carbon compounds, reflecting the slow decomposition of highly lignified material. Carbon stocks were higher in the superficial soil layer and under no-tillage due to the accumulation and slower decomposition of plant tissues under these conditions. Increases in the C/N ratio of the soil with Mucuna pruriens and the C/P ratio with Cajanus cajan in the dry season were also related to slower rates of decomposition, caused by the large concentration of aromatic compounds in the tissues of these species. The higher C/P ratios found at 0-5 cm layer are due to higher values of P (Mehlich-1) at 5-10 cm (25 mg kg-1) layer and the higher concentr... Mostrar Tudo |
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Palavras-Chave: |
Latossolo Vermelho-Amarelo; Ressonância magnetica nuclear. |
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Thesagro: |
Carbono; Cerrado; Matéria Orgânica; Planta de Cobertura. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122351/1/rca.pdf
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Marc: |
LEADER 02400naa a2200253 a 4500
001 2013554
005 2024-03-07
008 2014 bl uuuu u00u1 u #d
022 $a1806-6690
100 1 $aCARVALHO, A. M. de
245 $aCharacterization of cover crops by NMR spectroscopy$bimpacts on soil carbon, nitrogen and phosphorus under tilage regimes.$h[electronic resource]
260 $c2014
520 $aThe 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 polysaccharides and along with Mucuna pruriens presented the highest percentage of aromatic carbon compounds, reflecting the slow decomposition of highly lignified material. Carbon stocks were higher in the superficial soil layer and under no-tillage due to the accumulation and slower decomposition of plant tissues under these conditions. Increases in the C/N ratio of the soil with Mucuna pruriens and the C/P ratio with Cajanus cajan in the dry season were also related to slower rates of decomposition, caused by the large concentration of aromatic compounds in the tissues of these species. The higher C/P ratios found at 0-5 cm layer are due to higher values of P (Mehlich-1) at 5-10 cm (25 mg kg-1) layer and the higher concentration of carbon in the superficial soil layer as a result of the accumulation of plant residues.
650 $aCarbono
650 $aCerrado
650 $aMatéria Orgânica
650 $aPlanta de Cobertura
653 $aLatossolo Vermelho-Amarelo
653 $aRessonância magnetica nuclear
700 1 $aMARCHAO, R. L.
700 1 $aBUSTAMANTE, M. M. da C.
700 1 $aALCANTARA, F. A. de
700 1 $aCOSER, T. R.
773 $tRevista Ciência Agronômica$gv. 45, n. 5, p. 968-975, 2014.
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Embrapa Arroz e Feijão (CNPAF) |
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