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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
24/06/1998 |
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Data da última atualização: |
13/01/2010 |
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Autoria: |
McCARTY, G. W.; MEISINGER, J. J. |
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Título: |
Effects of N fertilizer treatments on biologically active N pools in soils under plow and no tillage. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Biology and Fertility Soils, v. 24, p. 406-412, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
Studies assessing the effects of different tillage and N fertilizer management practices on distributions and amounts of various C and N pools in soil can provide information about the influence of such management on the quality of organic matter in agricultural soils. To asses the influence of management on soil quality, we characterized the organic matter by measurements of total N, organic C, microbial biomass N and active N in the 0-20 cm profiles of soil from long-term field experiments containing plots under treatments of plow or no tillage and 0, 135, or 270 kg N ha-1 fertilizer. Previous work had established that on the basis of the crop growth requirement of maize, these application rates of fertilizer N provide amounts of N that are deficient, and excessive, respectively. The studies reported provide that the sufficient amount of fertilizer N stimulated formation of the biologically active pools of N (biomass N and active N) in soils under no tillage treatments, but the excessive amount of fertilizer N tended to suppress these pools. The results demonstrated that these influences of excessive N fertilizer were not reflected in distributions of total N or total organic C in soil profiles by became evident with the measurements of biologically active N. This suggests that such measurements can provide information related to the influence of different management practices on soil quality. |
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Palavras-Chave: |
Biomassa microbiana. |
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Thesagro: |
Nitrogênio; Qualidade; Solo. |
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Thesaurus Nal: |
nitrogen; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01987naa a2200205 a 4500
001 1079327
005 2010-01-13
008 1997 bl --- 0-- u #d
100 1 $aMcCARTY, G. W.
245 $aEffects of N fertilizer treatments on biologically active N pools in soils under plow and no tillage.
260 $c1997
520 $aStudies assessing the effects of different tillage and N fertilizer management practices on distributions and amounts of various C and N pools in soil can provide information about the influence of such management on the quality of organic matter in agricultural soils. To asses the influence of management on soil quality, we characterized the organic matter by measurements of total N, organic C, microbial biomass N and active N in the 0-20 cm profiles of soil from long-term field experiments containing plots under treatments of plow or no tillage and 0, 135, or 270 kg N ha-1 fertilizer. Previous work had established that on the basis of the crop growth requirement of maize, these application rates of fertilizer N provide amounts of N that are deficient, and excessive, respectively. The studies reported provide that the sufficient amount of fertilizer N stimulated formation of the biologically active pools of N (biomass N and active N) in soils under no tillage treatments, but the excessive amount of fertilizer N tended to suppress these pools. The results demonstrated that these influences of excessive N fertilizer were not reflected in distributions of total N or total organic C in soil profiles by became evident with the measurements of biologically active N. This suggests that such measurements can provide information related to the influence of different management practices on soil quality.
650 $anitrogen
650 $asoil
650 $aNitrogênio
650 $aQualidade
650 $aSolo
653 $aBiomassa microbiana
700 1 $aMEISINGER, J. J.
773 $tBiology and Fertility Soils$gv. 24, p. 406-412, 1997.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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| Registros recuperados : 4 | |
| 1. |  | MADARI, B. E.; REEVES III, J. B.; MACHADO, P. L. O. A.; GUIMARÃES, C. M.; TORRES, E.; MCCARTY, G. W. Mid- and near-infrared spectroscopic assessment of soil compositional parameters and structural indices in two Ferralsols. Geoderma, v. 136, n. 1/2, p. 245-259, Dec. 2006.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - B |
| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Soja. |
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| 2. | | MADARI, B. E.; REEVES III, J. B.; COELHO, M. R.; MACHADO, P. L. O. de A.; DE-POLLI, H.; COELHO, R. M.; BENITES, V. de M.; SOUZA, L. F. de; McCARTY, G. W. Espectroscopia infravermelha para a determinação de carbono do solo: perspectiva de um método economicamente viável e ambientalmente seguro. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2006. 6 p. (Embrapa Arroz e Feijão. Comunicado Técnico, 126).| Tipo: Comunicado Técnico/Recomendações Técnicas |
| Biblioteca(s): Embrapa Arroz e Feijão. |
|  |
| 3. | | MADARI, B. E.; REEVES, J. B.; COELHO, M. R.; MACHADO, P. L. O. de A.; DE-POLLI, H.; COELHO, R. M.; BENITES, V. de M.; SOUZA, F. F. de; MCCARTY, G. W. Espectroscopia infravermelha para a determinação de carbono do solo: perspectiva de um método economicamente viável e ambientalmente seguro. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2006. 6 p. (Embrapa Arroz e Feijão. Comunicado Técnico, 126). Parcerias: Embrapa Arroz e Feijão; USDA; Embrapa Solos; IAC.| Tipo: Comunicado Técnico/Recomendações Técnicas | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 4. | | MADARI, B. E.; REEVES, J. B.; COELHO, M. R.; MACHADO, P. L. O. A.; DE-POLLI, H.; COELHO, R. M.; BENITES, V. M.; SOUZA, L. F.; McCARTY, G. W. Mid- and near-infrared spectroscopic determination of carbon in a diverse set of soils from the Brazilian national soil collection. Spectroscopy Letters, v. 38, n. 6, p. 721-740, 2005.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Agrobiologia; Embrapa Arroz e Feijão; Embrapa Solos. |
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| Registros recuperados : 4 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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