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| Registros recuperados : 241 | |
| 103. |  | TEIXEIRA, R. N. G.; SOUZA, R. A. L.; SENA, E. M.; MOURA F. L. Resultados preliminares do cultivo de tambaqui, Colossoma macropomum (Pisces, Characidae) em gaiolas flutuantes num ponto fixo do rio arapiuns na região do baixo-amazonas- PA. In: ENCONTRO BRASILEIRO DE ICTIOLOGIA, 13.; ENCONTRO BRASILEIRO DE GRUPOS DE PESQUISAS DE PEIXES EM ESTUÁRIO, 1., 1999, São Carlos, SP. Resumos. São Carlos: UFSC: Sociedade Brasileira de Ictiologia, 1999. p. 542.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 107. | | BRANDÃO JÚNIOR, O.; SOUZA, R. A.; CRISPINO, C. C.; FRANCHINI, J. C.; TORRES, E.; HUNGRIA, M. Variação da biomassa microbiana em sistemas de manejo e rotação de culturas com a soja. In: CONGRESSO BRASILEIRO DE SOJA, 2.; MERCOSOJA 2002, 2002, Foz do Iguaçu. Perspectivas do agronegócio da soja: resumos. Londrina: Embrapa Soja, 2002. p. 250. (Embrapa Soja. Documentos, 181). Organizado por Odilon Ferreira Saraiva, Clara Beatriz Hoffmann-Campo.| Biblioteca(s): Embrapa Soja. |
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| 112. | | SOUZA, R. A.; HUNGRIA, M.; FRANCHINI, J. C.; CHUEIRE, L. M. O.; CAMPO, R. J.; MACIEL, C. D.; ZAIA, D. A cultura da soja no Brasil: definindo parâmetros para a avaliação do risco ambiental à microbiota do solo. In: CONGRESSO BRASILEIRO DE SOJA, 4., 2006, Londrina. Resumos... Londrina: Embrapa Soja, 2006. p. 180-181. Organizado por Odilon Ferreira Saraiva, Simone Ery Grosskopf.| Biblioteca(s): Embrapa Soja. |
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| 113. | | SOUZA, R. A.; HUNGRIA, M.; FRANCHINI, J. C.; CHUEIRE, L. M. O.; CAMPO, R. J.; MACIEL, C. D.; ZAIA, D. A cultura da soja no Brasil: definindo parâmetros para a avaliação de risco ambiental ao processo de fixação biológica do nitrogênio. In: CONGRESSO BRASILEIRO DE SOJA, 4., 2006, Londrina. Resumos... Londrina: Embrapa Soja, 2006. p. 181. Organizado por Odilon Ferreira Saraiva, Simone Ery Grosskopf.| Biblioteca(s): Embrapa Soja. |
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| 114. | | SOUZA, R. A. de; HUNGRIA, M.; FRANCHINI, J. C.; MACIEL, C. D.; CAMPO, R. J.; ZAIA, D. A. M. Conjunto mínimo de parâmetros para avaliação da microbiota do solo e da fixação biológica do nitrogênio pela soja. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 1, p. 83-91, jan. 2008.| Biblioteca(s): Embrapa Soja; Embrapa Unidades Centrais. |
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| 116. | | SILVA, A. P.; SOUZA, R. A.; BABUJIA, L. C.; NEVES, M. C. P.; FRANCHINI, J. C.; HUNGRIA, M. Carbono e nitrogênio da biomassa microbiana em diferentes sistemas de manejo do solo. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 4., 2009, Londrina. Resumos... Londrina: Embrapa Soja, 2009. p. 220-224. (Embrapa Soja. Documentos, 312). Editado por Odilon Ferreira Saraiva, Paula Geron Saiz Melo.| Biblioteca(s): Embrapa Soja. |
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| 117. | | MASCIOLI, A. dos S.; VOLTOLINI, T. V.; MANERA, D. B.; BARBOSA, L. D.; SOUSA, L. N. de; SOUZA, R. A. Características de carcaça de cabritos Saanen alimentados com rações contendo quatro proporções de concentrado e volumoso. In: CONGRESSO NORDESTINO DE PRODUÇÃO ANIMAL, 5.; SIMPÓSIO NORDESTINO DE ALIMENTAÇÃO DE RUMINANTES, 11.; SIMPÓSIO SERGIPANO DE PRODUÇÃO ANIMAL, 1., 2008, Aracaju. Anais... Aracaju: Sociedade Nordestina de Produção Animal; Embrapa Tabuleiros Costeiros, 2008.| Biblioteca(s): Embrapa Semiárido. |
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| 118. | | SILVA, A. P.; SOUZA, R. A.; BABUJIA, L. C.; OLIVEIRA, M. C. N.; FRANCHINI, J. C.; HUNGRIA, M. Avaliação da biomassa microbiana em solo cultivado com soja sob diferentes sistemas de manejos agrícola e rotação de culturas. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 24., 2007, Brasília, DF. Anais... Brasília, DF: Sociedade Brasileira de Microbiologia, 2007. 1 CD-ROM.| Biblioteca(s): Embrapa Soja. |
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| 120. | | SOUZA, R. A. de; HUNGRIA, M.; FRANCHINI, J. C.; CHUEIRE. L. M. de O.; BARCELLOS, F. G.; CAMPO, R. J. Avaliação qualitativa e quantitativa da microbiota do solo e da fixação biológica do nitrogênio pela soja. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 1, p. 71-82, jan. 2008.| Biblioteca(s): Embrapa Soja; Embrapa Unidades Centrais. |
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| Registros recuperados : 241 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
02/03/2006 |
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Data da última atualização: |
11/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
FRANCHINI, J. C.; CRISPINO, C. C.; SOUZA, R. A.; TORRES, E.; HUNGRIA, M. |
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Afiliação: |
JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; CARLA CRIPA CRISPINO, UFSCar; ELENO TORRES; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Microbiological parameters as indicators of soil quality under various soil management and crop rotation systems in southern Brazil. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Soil & Tillage Research, v. 92, n. 2, p. 18-29, Jan. 2007. |
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DOI: |
http://dx.doi.org/10.1016/j.still.2005.12.010 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to identify soil parameters potentially useful to monitor soil quality under different soil management and crop rotation systems. Microbiological and chemical parameters were evaluated in a field experiment in the State of Paraná, southern Brazil, in response to soil management [no-tillage (NT) and conventional tillage (CT)] and crop rotation [including grain (soybean, S; maize, M; wheat, W) and legume (lupin, L.) and non-legume (oat, O) covers] systems. Three crop rotation systems were evaluated: (1) (O/M/O/S/W/S/L/M/O/S), (2) (O/S/L/M/O/S/W/S/L/M), and (3) (O/S/W/S/L/M/O/M/W/M), and soil parameters were monitored after the fifth year. Before ploughing, CO2-emission rates were similar in NT and CT soils, but plough increased it by an average of 57%. Carbon dioxide emission was 13% higher with lupin residues than with wheat straw; decomposition rates were rapid with both soil management systems. Amounts of microbial biomass carbon and nitrogen (MB-C and MB-N, respectively) were 80 and 104% higher in NT than in CT, respectively; however, in general these parameters were not affected by crop rotation. Efficiency of the microbial community was significantly higher in NT: metabolic quotient (qCO2) was 55% lower than in CT. Soluble C and N levels were 37 and 24% greater in NT than in CT, respectively, with no effects of crop rotation. Furthermore, ratios of soluble C and N contents to MB-C and MB-N were consistently lower in NT, indicating higher immobilization of C and N per unit of MB. The decrease in qCO2 and the increase in MB-C under NT allowed enhancements in soil C stocks, such that in the 0?40 cm profile, a gain of 2500 kg of C ha-1 was observed in relation to CT. Carbon stocks also varied with crop rotation, with net changes at 0?40 cm of 726, 1167 and -394 kg C ha-1 year, in rotations 1, 2 and 3, respectively. Similar results were obtained for the N stocks, with 410 kg N ha-1 gained in NT, while crop rotations 1, 2 and 3 accumulated 71, 137 and 37 kg of N ha-1 year-1, respectively. On average, microbial biomass corresponded to 2.4 and 1.7% of the total soil C, and 5.2 and 3.2% of the N in NT and CT systems, respectively. Soil management was the main factor affecting soil C and N levels, but enhancement also resulted from the ratios of legumes and non-legumes in the rotations. The results emphasize the importance of microorganisms as reservoirs of C and N in tropical soils. Furthermore, the parameters associated with microbiological activity were more responsive to soil management and crop rotation effects than were total stocks of C and N, demonstrating their usefulness as indicators of soil quality in the tropics. MenosThe objective of this work was to identify soil parameters potentially useful to monitor soil quality under different soil management and crop rotation systems. Microbiological and chemical parameters were evaluated in a field experiment in the State of Paraná, southern Brazil, in response to soil management [no-tillage (NT) and conventional tillage (CT)] and crop rotation [including grain (soybean, S; maize, M; wheat, W) and legume (lupin, L.) and non-legume (oat, O) covers] systems. Three crop rotation systems were evaluated: (1) (O/M/O/S/W/S/L/M/O/S), (2) (O/S/L/M/O/S/W/S/L/M), and (3) (O/S/W/S/L/M/O/M/W/M), and soil parameters were monitored after the fifth year. Before ploughing, CO2-emission rates were similar in NT and CT soils, but plough increased it by an average of 57%. Carbon dioxide emission was 13% higher with lupin residues than with wheat straw; decomposition rates were rapid with both soil management systems. Amounts of microbial biomass carbon and nitrogen (MB-C and MB-N, respectively) were 80 and 104% higher in NT than in CT, respectively; however, in general these parameters were not affected by crop rotation. Efficiency of the microbial community was significantly higher in NT: metabolic quotient (qCO2) was 55% lower than in CT. Soluble C and N levels were 37 and 24% greater in NT than in CT, respectively, with no effects of crop rotation. Furthermore, ratios of soluble C and N contents to MB-C and MB-N were consistently lower in NT, indicating higher im... Mostrar Tudo |
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024 7 $ahttp://dx.doi.org/10.1016/j.still.2005.12.010$2DOI
100 1 $aFRANCHINI, J. C.
245 $aMicrobiological parameters as indicators of soil quality under various soil management and crop rotation systems in southern Brazil.
260 $c2007
520 $aThe objective of this work was to identify soil parameters potentially useful to monitor soil quality under different soil management and crop rotation systems. Microbiological and chemical parameters were evaluated in a field experiment in the State of Paraná, southern Brazil, in response to soil management [no-tillage (NT) and conventional tillage (CT)] and crop rotation [including grain (soybean, S; maize, M; wheat, W) and legume (lupin, L.) and non-legume (oat, O) covers] systems. Three crop rotation systems were evaluated: (1) (O/M/O/S/W/S/L/M/O/S), (2) (O/S/L/M/O/S/W/S/L/M), and (3) (O/S/W/S/L/M/O/M/W/M), and soil parameters were monitored after the fifth year. Before ploughing, CO2-emission rates were similar in NT and CT soils, but plough increased it by an average of 57%. Carbon dioxide emission was 13% higher with lupin residues than with wheat straw; decomposition rates were rapid with both soil management systems. Amounts of microbial biomass carbon and nitrogen (MB-C and MB-N, respectively) were 80 and 104% higher in NT than in CT, respectively; however, in general these parameters were not affected by crop rotation. Efficiency of the microbial community was significantly higher in NT: metabolic quotient (qCO2) was 55% lower than in CT. Soluble C and N levels were 37 and 24% greater in NT than in CT, respectively, with no effects of crop rotation. Furthermore, ratios of soluble C and N contents to MB-C and MB-N were consistently lower in NT, indicating higher immobilization of C and N per unit of MB. The decrease in qCO2 and the increase in MB-C under NT allowed enhancements in soil C stocks, such that in the 0?40 cm profile, a gain of 2500 kg of C ha-1 was observed in relation to CT. Carbon stocks also varied with crop rotation, with net changes at 0?40 cm of 726, 1167 and -394 kg C ha-1 year, in rotations 1, 2 and 3, respectively. Similar results were obtained for the N stocks, with 410 kg N ha-1 gained in NT, while crop rotations 1, 2 and 3 accumulated 71, 137 and 37 kg of N ha-1 year-1, respectively. On average, microbial biomass corresponded to 2.4 and 1.7% of the total soil C, and 5.2 and 3.2% of the N in NT and CT systems, respectively. Soil management was the main factor affecting soil C and N levels, but enhancement also resulted from the ratios of legumes and non-legumes in the rotations. The results emphasize the importance of microorganisms as reservoirs of C and N in tropical soils. Furthermore, the parameters associated with microbiological activity were more responsive to soil management and crop rotation effects than were total stocks of C and N, demonstrating their usefulness as indicators of soil quality in the tropics.
650 $aSolo
700 1 $aCRISPINO, C. C.
700 1 $aSOUZA, R. A.
700 1 $aTORRES, E.
700 1 $aHUNGRIA, M.
773 $tSoil & Tillage Research$gv. 92, n. 2, p. 18-29, Jan. 2007.
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