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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
02/02/2011 |
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Data da última atualização: |
03/08/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BABUJIA, L. C.; HUNGRIA, M.; FRANCHINI, J. C.; BROOKES, P. C. |
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Afiliação: |
L. C. BABUJIA, UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; P. C. BROOKES, Rothamsted Research. |
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Título: |
Microbial biomass and activity at various soil depths in a Brazilian oxisol after two decades of no-tillage and conventional tillage. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Soil Biology and Biochemistry, Oxford, v. 42, n. 12, p. 2174-2181, Dec. 2010. |
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DOI: |
10.1016/j.soilbio.2010.08.013 |
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Idioma: |
Inglês |
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Conteúdo: |
The advantages of no-tillage (NT) over conventional tillage (CT) systems in improving soil quality are generally accepted, resulting from benefits in soil physical, chemical and biological properties. However, most evaluations have only considered surface soil layers (maximum 0?30 cm depth), and values have not been corrected to account for changes in soil bulk density. The objective of this study was to estimate a more realistic contribution of the NT to soil fertility, by evaluating C- and N-related soil parameters at the 0?60 cm depth in a 20-year experiment established on an oxisol in southern Brazil, with a soybean (summer)/wheat (winter) crop succession under NT and CT. At full flowering of the soybean crop, soil samples were collected at depths of 0?5, 5?10, 10?20, 20?30, 30?40, 40?50 and 50?60 cm. For the overall 0?60 cm layer, correcting the values for soil bulk density, NT significantly increased the stocks of C (18%) and N (16%) and microbial biomass C (35%) and N (23%) (MB-C and -N) in comparison to CT. Microbial basal respiration and microbial quotient (qMic) were also significantly increased under NT. When compared with CT, NT resulted in gains of 0.8 Mg C ha?1 yr?1 (67% of which was in the 0?30 cm layer) and 70 kg N ha?1 yr?1 (73% in the 0?30 cm layer). In the 0?5-cm layer, MB-C was 82% higher with NT than with CT; in addition, the 0?30 cm layer accumulated 70% of the MB-C with NT, and 58% with CT. In comparison to CT, the NT system resulted in total inputs of microbial C and N estimated at 38 kg C ha?1 yr?1 and 1.5 kg N ha?1 yr?1, respectively. Apparently, N was the key nutrient limiting C and N stocks, and since adoption of NT resulted in a significant increase of N in soils which were deficient in N, efforts should be focused on increasing N inputs on NT systems. MenosThe advantages of no-tillage (NT) over conventional tillage (CT) systems in improving soil quality are generally accepted, resulting from benefits in soil physical, chemical and biological properties. However, most evaluations have only considered surface soil layers (maximum 0?30 cm depth), and values have not been corrected to account for changes in soil bulk density. The objective of this study was to estimate a more realistic contribution of the NT to soil fertility, by evaluating C- and N-related soil parameters at the 0?60 cm depth in a 20-year experiment established on an oxisol in southern Brazil, with a soybean (summer)/wheat (winter) crop succession under NT and CT. At full flowering of the soybean crop, soil samples were collected at depths of 0?5, 5?10, 10?20, 20?30, 30?40, 40?50 and 50?60 cm. For the overall 0?60 cm layer, correcting the values for soil bulk density, NT significantly increased the stocks of C (18%) and N (16%) and microbial biomass C (35%) and N (23%) (MB-C and -N) in comparison to CT. Microbial basal respiration and microbial quotient (qMic) were also significantly increased under NT. When compared with CT, NT resulted in gains of 0.8 Mg C ha?1 yr?1 (67% of which was in the 0?30 cm layer) and 70 kg N ha?1 yr?1 (73% in the 0?30 cm layer). In the 0?5-cm layer, MB-C was 82% higher with NT than with CT; in addition, the 0?30 cm layer accumulated 70% of the MB-C with NT, and 58% with CT. In comparison to CT, the NT system resulted in total inputs of... Mostrar Tudo |
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Thesagro: |
Biologia do solo; Conservação do solo. |
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Thesaurus Nal: |
Soil biology; Soil conservation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02523naa a2200217 a 4500
001 1875482
005 2017-08-03
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1016/j.soilbio.2010.08.013$2DOI
100 1 $aBABUJIA, L. C.
245 $aMicrobial biomass and activity at various soil depths in a Brazilian oxisol after two decades of no-tillage and conventional tillage.
260 $c2010
520 $aThe advantages of no-tillage (NT) over conventional tillage (CT) systems in improving soil quality are generally accepted, resulting from benefits in soil physical, chemical and biological properties. However, most evaluations have only considered surface soil layers (maximum 0?30 cm depth), and values have not been corrected to account for changes in soil bulk density. The objective of this study was to estimate a more realistic contribution of the NT to soil fertility, by evaluating C- and N-related soil parameters at the 0?60 cm depth in a 20-year experiment established on an oxisol in southern Brazil, with a soybean (summer)/wheat (winter) crop succession under NT and CT. At full flowering of the soybean crop, soil samples were collected at depths of 0?5, 5?10, 10?20, 20?30, 30?40, 40?50 and 50?60 cm. For the overall 0?60 cm layer, correcting the values for soil bulk density, NT significantly increased the stocks of C (18%) and N (16%) and microbial biomass C (35%) and N (23%) (MB-C and -N) in comparison to CT. Microbial basal respiration and microbial quotient (qMic) were also significantly increased under NT. When compared with CT, NT resulted in gains of 0.8 Mg C ha?1 yr?1 (67% of which was in the 0?30 cm layer) and 70 kg N ha?1 yr?1 (73% in the 0?30 cm layer). In the 0?5-cm layer, MB-C was 82% higher with NT than with CT; in addition, the 0?30 cm layer accumulated 70% of the MB-C with NT, and 58% with CT. In comparison to CT, the NT system resulted in total inputs of microbial C and N estimated at 38 kg C ha?1 yr?1 and 1.5 kg N ha?1 yr?1, respectively. Apparently, N was the key nutrient limiting C and N stocks, and since adoption of NT resulted in a significant increase of N in soils which were deficient in N, efforts should be focused on increasing N inputs on NT systems.
650 $aSoil biology
650 $aSoil conservation
650 $aBiologia do solo
650 $aConservação do solo
700 1 $aHUNGRIA, M.
700 1 $aFRANCHINI, J. C.
700 1 $aBROOKES, P. C.
773 $tSoil Biology and Biochemistry, Oxford$gv. 42, n. 12, p. 2174-2181, Dec. 2010.
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Registro original: |
Embrapa Soja (CNPSO) |
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| 23. |  | LIMA, M. A. C. de; SILVA, A. L. da; AZEVEDO, S. S. N. Evolução de indicadores do ponto de colheita em manga "Tommy Atkins" durante o crescimento e a maturação, nas condições do Vale do São Francisco, Brasil. Ciência e Agrotecnologia, Lavras, v. 33, n. 2, p. 432-439, mar./abr. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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| 24. | | BRIGHENTI, A. F.; SILVA, A. L. da; BRIGHENTI, E.; PORRO, D.; STEFANINI, M. Desempenho vitícola de variedade autóctones italianas em condição de elevada altitude no Sul do Brasil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 6, p. 465-474, jun. 2014. Título em inglês: Viticultural performance of native Italian varieties in high?altitude conditions in Southern Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 29. | | LIMA, M. A. C. de; SILVA, A. L. da; AZEVEDO, S. S. N. Materiais de embalagem e conservação pós-colheita de uva 'Itália' durante o armazenamento refrigerado. In: CONGRESSO LATINO-AMERICANO DE VITICULTURA E ENOLOGIA, 10.; CONGRESSO BRASILEIRO DE VITICULTURA E ENOLOGIA, 11.; SEMINÁRIO FRANCO-BRASILEIRO DE VITICULTURA E ENOLOGIA, 2., 2005, Bento Gonçalves. Anais... Bento Gonçalves: Embrapa Uva e Vinho, 2005. p. 294. (Embrapa Uva e Vinho. Documentos, 55).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 32. | | BORGHEZAN, M.; GAVIOLI, O.; VIEIRA, H. J.; SILVA, A. L. da. Shoot growth of Merlot and Cabernet Sauvignon grapevine varieties. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 2, p. 200-207, fev. 2012. Título em português: Crescimento de ramos das variedades de videira Merlot e Cabernet Sauvignon.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 34. | | SILVA, A. L. da; PIUZANA, L. G.; SANT'ANA, A. B.; TOMICH, T. R.; SOUSA, F. C. de; ROTTA, P. P. Aditivos alimentares para redução da emissão de metano em vacas leiteiras. In: SIMPÓSIO INTERNACIONAL DE BOVINOCULTURA LEITEIRA, 9., 2023, Viçosa, MG. Anais... Viçosa, MG: Universidade Federal de Viçosa, 2023. p. 137-156.| Tipo: Artigo em Anais de Congresso |
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| 35. | | MOUCO, M. A. do C.; LIMA, M. A. C. de; SILVA, A. L. da; SANTOS, S. C. A. dos. Amino acids on mango yield and fruit quality at Submedio São Francisco region, Brazil. Acta Horticulturae, Leuven, n. 820, p. 437-442, abr. 2009. Edição do Proceedings of the 8 International Mango Symposium, Sun City, South Africa, Abril, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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| 36. | | SILVA, A. L. da; LIMA, M. A. C. de; HOLSHUH, H. J.; TRINDADE, D. C. G. da. Aparência e alterações físicas em mangas 'Tommy Atkins' submetidas a tratamentos pós-colheita com altas concentrações de CO2 durante o armazenamento refrigerado. In: SIMPÓSIO BRASILEIRO DE PÓS-COLHEITA DE FRUTAS, HORTALIÇAS E FLORES, 2., 2007, Viçosa, MG. Palestras e resumos... Viçosa, MG: UFV, 2007. p. 317.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 38. | | CHAVES, F. C. M.; SILVA, A. L. da; LAMEIRA, R. das C.; BIZZO, H. R.; SOUZA, A. M. de. Biomassa, teor e composição química do óleo essencial de pimenta-de-macaco, em função de espaçamentos e épocas de corte, Manaus - AM. In: SIMPÓSIO BRASILEIRO DE ÓLEOS ESSENCIAIS, 5., 2009, Rio de Janeiro. Anais... Rio de Janeiro: Instituto Militar de Engenharia, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
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| 39. | | CHAVES, F. C. M.; SILVA, A. L. da; LAMEIRA, R. das C.; BIZZO, H. R.; SOUZA, A. M. de. Biomassa, teor e composição química do óleo essencial de pimenta-de-macaco, em função de espaçamentos e épocas de corte, Manaus - AM. In: SIMPÓSIO BRASILEIRO DE ÓLEOS ESSENCIAIS, 5., 2009, Rio de Janeiro. Anais... Rio de Janeiro: Instituto Militar de Engenharia, 2009. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
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| 40. | | CORSO, I. C.; GAZZONI, D. L.; GOMES, S. A.; CURADO NETO, L. O. F.; SILVA, A. L. da. Recomendação de inseticidas para utilização no programa de manejo de pragas da soja, safra 1984/85, na Região Central do Brasil (PR, SP, MS, MT, GO, DF, MG, BA, e RO). Londrina: EMBRAPA-CNPSO, 1984. 7p. (EMBRAPA-CNPSO. Comunicado Técnico, 27).| Tipo: Comunicado Técnico/Recomendações Técnicas |
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| Registros recuperados : 105 | |
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