| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
22/11/2002 |
|
Data da última atualização: |
04/03/2020 |
|
Autoria: |
FREIXO, A. A.; MACHADO, P. L. O. de A.; SANTOS, H. P. dos; SILVA, C. A.; FADIGAS, F. de S. |
|
Afiliação: |
ALESSANDRA A. FREIXO, UFRRJ; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPS; HENRIQUE PEREIRA DOS SANTOS, CNPT; CARLOS A. SILVA, CNPS; FRANCISCO DE S. FADIGAS, UFRRJ. |
|
Título: |
Soil organic carbon and fractions of a Rhodic Ferralsol under the influence of tillage and crop rotation systems in Southern Brazil. |
|
Ano de publicação: |
2002 |
|
Fonte/Imprenta: |
Soil & Tillage Research, v. 64, n. 3/4, p. 221-230, Mar. 2002. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Soil organic matter (SOM) and its different pools have key importance in optimizing crop production, minimizing negative environmental impacts, and thus improving soil quality. The objective of this study was to evaluate the soil C and N contents in bulk soil and in different SOM pools (light and heavy fractions) of a clayey Rhodic Ferralsol after 13 years of different tillage and crop rotations in Passo Fundo, State of Rio Grande do Sul, Brazil. Soil samples were collected from no-tillage (no soil disturbance except for sowing; NT) and conventional tillage (disc plough followed by light disc harrowings; CT) applied to wheat/soybean (W/S) and wheat/soybean-vetch/maize (W/S-V/M) rotations. As reference, soil was sampled from a noncultivated area adjacent to the field experiment. The greatest soil C and N contents were found in non-cultivated soils in the 0-5 cm depth (45 g C kg-1 soil and 3.6 g N kg-1 soil). Crop cultivation led to a decrease in SOM content which was higher for CT soils (approx. 60% decrease in C and N contents) than NT soils (approx. 43% decrease in C and N contents) at 0-5 cm. Tillage had the greatest impact on soil C and N storage. Soils under NT did not contain higher C and N storage than CT soils below 5 cm depth. Significantly, higher amounts of organic carbon of FLF in CT (0.5-0.7 g C kg-1 soil) than in NT soils (0.2 g C kg-1 soil) at 10-20 cm depth were also observed and the differences in C and N storage between CT and NT soils in the 0-30 cm layer were not significant. Silt and clay fractions contained the largest amount of organic carbon (60-95% of total organic carbon), and free light fraction was the most sensitive pool of organic carbon to detect changes in SOM due to soil tillage and crop rotations. MenosSoil organic matter (SOM) and its different pools have key importance in optimizing crop production, minimizing negative environmental impacts, and thus improving soil quality. The objective of this study was to evaluate the soil C and N contents in bulk soil and in different SOM pools (light and heavy fractions) of a clayey Rhodic Ferralsol after 13 years of different tillage and crop rotations in Passo Fundo, State of Rio Grande do Sul, Brazil. Soil samples were collected from no-tillage (no soil disturbance except for sowing; NT) and conventional tillage (disc plough followed by light disc harrowings; CT) applied to wheat/soybean (W/S) and wheat/soybean-vetch/maize (W/S-V/M) rotations. As reference, soil was sampled from a noncultivated area adjacent to the field experiment. The greatest soil C and N contents were found in non-cultivated soils in the 0-5 cm depth (45 g C kg-1 soil and 3.6 g N kg-1 soil). Crop cultivation led to a decrease in SOM content which was higher for CT soils (approx. 60% decrease in C and N contents) than NT soils (approx. 43% decrease in C and N contents) at 0-5 cm. Tillage had the greatest impact on soil C and N storage. Soils under NT did not contain higher C and N storage than CT soils below 5 cm depth. Significantly, higher amounts of organic carbon of FLF in CT (0.5-0.7 g C kg-1 soil) than in NT soils (0.2 g C kg-1 soil) at 10-20 cm depth were also observed and the differences in C and N storage between CT and NT soils in the 0-30 cm layer w... Mostrar Tudo |
|
Thesagro: |
Armazenamento; Matéria Orgânica; Solo. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02423naa a2200205 a 4500
001 1337539
005 2020-03-04
008 2002 bl uuuu u00u1 u #d
100 1 $aFREIXO, A. A.
245 $aSoil organic carbon and fractions of a Rhodic Ferralsol under the influence of tillage and crop rotation systems in Southern Brazil.$h[electronic resource]
260 $c2002
520 $aSoil organic matter (SOM) and its different pools have key importance in optimizing crop production, minimizing negative environmental impacts, and thus improving soil quality. The objective of this study was to evaluate the soil C and N contents in bulk soil and in different SOM pools (light and heavy fractions) of a clayey Rhodic Ferralsol after 13 years of different tillage and crop rotations in Passo Fundo, State of Rio Grande do Sul, Brazil. Soil samples were collected from no-tillage (no soil disturbance except for sowing; NT) and conventional tillage (disc plough followed by light disc harrowings; CT) applied to wheat/soybean (W/S) and wheat/soybean-vetch/maize (W/S-V/M) rotations. As reference, soil was sampled from a noncultivated area adjacent to the field experiment. The greatest soil C and N contents were found in non-cultivated soils in the 0-5 cm depth (45 g C kg-1 soil and 3.6 g N kg-1 soil). Crop cultivation led to a decrease in SOM content which was higher for CT soils (approx. 60% decrease in C and N contents) than NT soils (approx. 43% decrease in C and N contents) at 0-5 cm. Tillage had the greatest impact on soil C and N storage. Soils under NT did not contain higher C and N storage than CT soils below 5 cm depth. Significantly, higher amounts of organic carbon of FLF in CT (0.5-0.7 g C kg-1 soil) than in NT soils (0.2 g C kg-1 soil) at 10-20 cm depth were also observed and the differences in C and N storage between CT and NT soils in the 0-30 cm layer were not significant. Silt and clay fractions contained the largest amount of organic carbon (60-95% of total organic carbon), and free light fraction was the most sensitive pool of organic carbon to detect changes in SOM due to soil tillage and crop rotations.
650 $aArmazenamento
650 $aMatéria Orgânica
650 $aSolo
700 1 $aMACHADO, P. L. O. de A.
700 1 $aSANTOS, H. P. dos
700 1 $aSILVA, C. A.
700 1 $aFADIGAS, F. de S.
773 $tSoil & Tillage Research$gv. 64, n. 3/4, p. 221-230, Mar. 2002.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 12 | |
| 4. |  | FIGUEIREDO, A. G.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; MALTA, M. R.; VILELA, A. L. Antioxidant enzyme expression and its relationship to coffee beans quality. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 246.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
|    |
| 5. | | FANTAZZINI, T. B.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; PEREIRA, C. C.; OLIVEIRA, R. M. Physiological quality of coffee seeds submitted to artificial and natural ageing. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 128.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
| |
| 6. | | CLEMENTE, A. C. S.; GUIMARÃES, R. M.; MARTINS, D. C.; GOMES, L. A. A.; CAIXETA, F.; REIS, R. G. E.; ROSA, S. D. V. F. da. Expression of genes associated with the biosynthetic pathways of abscisic acid, gibberellin, and ethylene during the germination of lettuce seeds. Genetics and Molecular Research, v. 14, n. 2, p. 4703-4715, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Café. |
| |
| 7. | | FIGUEIREDO, M. A.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; COELHO, S. V. B.; GUIMARÃES, G. C.; REIS, L. V. Enzymatic and cathodic water protection during coffee seed drying. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 125.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
| |
| 8. | | FIGUEIREDO, M. A.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; RICALDONI, M. A.; CARVALHO, C. P.; FILHO, R. S.; SOUZA, L. N. C. de. Antioxidantes endógenos e exógenos em sementes de Coffea Arabica L. secadas por diferentes métodos. In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 42., 2016, Serra Negra, SP. Produzir mais café, com economia, só com boa tecnologia: trabalhos apresentados. Varginha: Fundação Procafé, 2016. 466 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
|  |
| 9. | | SOUZA, L. N. C.; ROSA, S. D. V. F. da; GRANJA, M. O.; OLIVEIRA, R. M. E.; VEIGA, A. D.; CLEMENTE, A. C. S. Seed physico-chemical characteristics of coffee clones resistant to rust in raw and toast samples. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 118.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
| |
| 10. | | ABREU, G. F. de; ROSA, S. D. V. F. da; CIRILLO, M. A.; MALTA, M. R.; CLEMENTE, A. C. S.; BORÉM, F. M. Simultaneous optimization of coffee quality variables during storage. Revista Brasileira de Engenharia Agrícola e Ambiental, Campo Grande, MS, v. 21, n. 1, p. 56-60, 2017| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
| |
| 11. | | FIGUEIREDO, M. A.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; CARVALHO, C. P.; RICALDONI, M. A.; VILELA, A. L. Cathodic and catalase enzyme protection in coffee seeds under different cryopreservation protocols. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 124.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
| |
| 12. | | SANTOS, F. C. dos; ROSA, S. D. V. F. da; COELHO, S. V. B.; CLEMENTE, A. C. S.; FANTAZZINI, T. B.; PEREIRA, C. C.; CAIXETA, F.; FÁVARIS, N. A. B.; BAÚTE, J. L. GA3 and ABI3 gene expression in coffee seeds during maturation. Genetics and Molecular Research, v. 18, n. 3, 2019| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
| |
| Registros recuperados : 12 | |
|
| Expressão de busca inválida. Verifique!!! |
|
|
