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Registros recuperados : 18 | |
2. | | REIN. T. A.; DUXBURY, J. M. Modeling the soil organic carbon, texture and mineralogy relations in the profile of oxisols from the Brazilian Cerrado. In: SIMPÓSIO NACIONAL CERRADO, 9.; SIMPÓSIO INTERNACIONAL SAVANAS TROPICAIS, 2., 2008, Brasília, DF. Desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais: anais... Planaltina, DF: Embrapa Cerrados, 2008. 1 CD-ROM. Biblioteca(s): Embrapa Cerrados. |
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10. | | KLAUSNER, S. D.; SUHET, A. R.; DUXBURY, J. M. Estimating Nitrogen Mineralization in a "Cerrado" Dark-Red Latosol, by Laboratory Incubation, and the Effect of Soil Sample Disturbance. Pesquisa Agropecuária Brasileira, Brasília, V. 25, n.4, p. 617-623, abr.1990 Biblioteca(s): Embrapa Unidades Centrais. |
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17. | | LADHA, J. K.; HILL, J. E.; DUXBURY, J. M.; GUPTA, R. K.; BURESH, R. J. (ed.). Improving the productivity and sustainability of rice-wheat systems: issues and impacts. Madison: ASA: CSSA: SSSA, 2003. 231 p. (ASA. Special Publication, 65). Proceedings of an international symposium cosponsored by Division A-6 (International Agronomy), the International Rice Research Institute (IRRI), and Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), held at the 2001 Annual... Biblioteca(s): Embrapa Arroz e Feijão. |
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Registros recuperados : 18 | |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
18/02/2002 |
Data da última atualização: |
18/02/2002 |
Autoria: |
KLAUSNER, S. D.; SUHET, A. R.; DUXBURY, J. M. |
Título: |
Estimating Nitrogen Mineralization in a "Cerrado" Dark-Red Latosol, by Laboratory Incubation, and the Effect of Soil Sample Disturbance. |
Ano de publicação: |
1990 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, V. 25, n.4, p. 617-623, abr.1990 |
Idioma: |
Inglês |
Conteúdo: |
Four dark-red latosols (Haplustox) were sampled at or near the "Centro de Pesquisa Agropecuária dos Cerrados - CPAC" - (Cerrados Agriicultural Research Center), in Planaltina, DF, Brazil. A laboratory soil incubation study, at 35ºC and 0.25 bar water tension, was conducted to evaluate the effect of soil disturbance on N mineralization and to determine the suitability of an incubation procedure for estimating N mineralization in the field. Mineralization rates ranged from 1.2 to 8.8 kg N ha-1 wk-1 over a twelve-week period. The data suggested that as long as there is some degree of soil aggregation, soil disturbance had no effect on N mineralization. The amount of N mineralized during the incubation period in the laboratory showed a low correlation with the N mineralization in the field. |
Palavras-Chave: |
nitrogen analysis in soil; savanna. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01365naa a2200169 a 4500 001 1106348 005 2002-02-18 008 1990 bl uuuu u00u1 u #d 100 1 $aKLAUSNER, S. D. 245 $aEstimating Nitrogen Mineralization in a "Cerrado" Dark-Red Latosol, by Laboratory Incubation, and the Effect of Soil Sample Disturbance. 260 $c1990 520 $aFour dark-red latosols (Haplustox) were sampled at or near the "Centro de Pesquisa Agropecuária dos Cerrados - CPAC" - (Cerrados Agriicultural Research Center), in Planaltina, DF, Brazil. A laboratory soil incubation study, at 35ºC and 0.25 bar water tension, was conducted to evaluate the effect of soil disturbance on N mineralization and to determine the suitability of an incubation procedure for estimating N mineralization in the field. Mineralization rates ranged from 1.2 to 8.8 kg N ha-1 wk-1 over a twelve-week period. The data suggested that as long as there is some degree of soil aggregation, soil disturbance had no effect on N mineralization. The amount of N mineralized during the incubation period in the laboratory showed a low correlation with the N mineralization in the field. 653 $anitrogen analysis in soil 653 $asavanna 700 1 $aSUHET, A. R. 700 1 $aDUXBURY, J. M. 773 $tPesquisa Agropecuária Brasileira, Brasília, V. 25$gn.4, p. 617-623, abr.1990
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