| |
|
|
| Registros recuperados : 70 | |
| 3. |  | BELTRAME, R.; LAZAROTTO, M.; HASELEIN, C. R.; SANTINI, E. J.; SCHNEIDER, P. R.; AGUIAR, A. M. Determinação das deformações residuais longitudinais decorrentes das tensões de crescimento em Eucalyptus spp. Ciência Florestal, Santa Maria, RS, v. 22, n. 2, p. 343-351, jul./set. 2012.| Biblioteca(s): Embrapa Florestas. |
|   |
| 4. | | BELTRAME, R.; MATTOS, B. D.; HASELEIN, C. R.; SANTINI, E. J.; GATTO, D. A.; CADEMARTORI, P. H. G. de; PEDRAZZI, C. Evaluation of longitudinal residual strain of Eucalyptus saligna Smith. wood. Scientia Forestalis, Piracicaba, v. 41, n. 97, p. 95-101, mar. 2013.| Biblioteca(s): Embrapa Florestas. |
| |
| 5. | | BULIGON, E. A.; HASELEIN, C. R.; GATTO, D. A.; SANTINI, E. J.; RAUBER, R.; BERGER, C. Propriedades físico-mecânicas de painéis de lâminas paralelas reforçados com PRFV. Ciência Florestal, Santa Maria, v. 25, n. 3, p. 731-741, jul./set. 2015.| Biblioteca(s): Embrapa Florestas. |
| |
| 6. | | CADEMARTORI, P. H. G. de; GATTO, D. A.; STANGERLIN, D. M.; MASTELLA, T.; VARGAS, J. F.; SANTINI, E. J. Uso de herbicida na redução das tensões de crescimento na madeira serrada de Eucalyptus grandis. Ciência Florestal, Santa Maria, v. 25, n. 3, p. 801-808, jul./set. 2015. Nota técnica.| Biblioteca(s): Embrapa Florestas. |
| |
| 7. | | CALEGARI, L.; BOCHETTI, C. E.; HASELEIN, C. R.; ANDRADE, J. L. S. de; SANTINI, E. J. Características de algumas biomassas usadas na geração de enrgia no Sul do Brasil. Biomassa & Energia, Viçosa, v. 2, n. 1, p. 37-46, jan./mar. 2005.| Biblioteca(s): Embrapa Florestas. |
| |
| 8. | | CALEGARI, L.; HASELEIN, C. R.; HACK, C.; GATTO, D. A.; BARROS, M. V.; SANTINI, E. J. Monitoramento da temperatura no interior de chapas aglomeradas durante o processo de prensagem. Ciência Florestal, Santa Maria, v. 15, n. 1/2, p. 157-166, mar. 2005.| Biblioteca(s): Embrapa Florestas. |
| |
| 9. | | CALEGARI, L.; HASELEIN, C. R.; SCARAVELLI, T. L.; SANTINI, E. J.; STANGERLIN, D. M.; GATTO, A. A.; TREVISAN, R. Desempenho físico-mecânico de painéis fabricados com bambú (Bambusa vulgaris Schr.) em combinação com madeira. Cerne, Lavras, v. 13, n. 1, p. 57-63, jan./mar. 2007.| Biblioteca(s): Embrapa Florestas. |
| |
| 10. | | CALEGARI, L.; STANGERLIN, D. M.; SANTINI, E. J.; HASELEIN, C. R.; GATTO, D. A.; CARMO, P. I. O. de; SILVA FILHO, L. C. P. da. Avaliação de alguns fatores influentes na velocidade ultra-sônica da madeira. Floresta, Curitiba, v. 38, n. 4, p. 607-615, out./dez. 2008.| Biblioteca(s): Embrapa Florestas. |
| |
| 11. | | CALEGARI, L.; STANGERLIN, D. M.; SANTINI, E. J.; HASELEIN, C. R.; LONGHI, S. L.; CARMO, P. I. O. do; SILVA FILHO, L. C. P. da S.; GATTO, D. A. Monitoramento do teor de umidade de madeiras de Pinus elliottii Engelm. e Eucalyptus grandis W. Hill ex Maiden, sob diferentes temperaturas de secagem, através do ultra-som. Ciência Florestal, Santa Maria, v. 17, n. 3/4, p. 399-408, jul./dez. 2007.| Biblioteca(s): Embrapa Florestas. |
| |
| 12. | | DACOSTA, L. P. E.; HALESEIN, C. R.; SANTINI, E. J.; SCHNEIDER, P. R.; CALEGARI, L. Propriedades físicas de chapas de partículas aglomeradas fabricadas com resíduos do processamento mecânico da madeira de Pinus elliotii [i.e. elliottii] Engelm. Ciência Florestal, Santa Maria, v. 15, n. 3/4, p. 421-429, set. 2005.| Biblioteca(s): Embrapa Florestas. |
| |
| 13. | | DACOSTA, L. P. E.; HASELEIN, C. R.; SANTINI, E. J.; SCHNEIDER, P. R.; CALEGARI, L. Qualidade das chapas de partículas aglomeradas fabricadas com resíduos do processamento mecânico da madeira de Pinus elliottii Engelm. Ciência Florestal, Santa Maria, v. 15, n. 3/4, p. 311-322, set. 2005.| Biblioteca(s): Embrapa Florestas. |
| |
| 14. | | GATTO, D. A.; CALEGARI, L.; SANTINI, E. J.; STANGERLIN, D. M.; TREVISAN, R.; OLIVEIRA, L. da S. Propriedades da madeira de Pinus elliottii Engelm submetida a diferentes temperaturas de secagem. Cerne, Lavras, v. 14, n. 3, p. 220-226, jul./set. 2008.| Biblioteca(s): Embrapa Florestas. |
| |
| 15. | | GATTO, D. A.; HASELEIN, C. R.; BULIGON, E. A.; CALEGARI, L.; STANGERLIN, D. M.; MELO, R. R. de; TREVISAN, R.; SANTINI, E. J. Estimativa da idade de segregação do lenho juvenil e adulto de Carya illinoinensis (Wangenh) K. Koch por meio de parâmetros anatômicos da madeira. Ciência Florestal, Santa Maria, v. 20, n. 4, p. 675-682, out./dez. 2010.| Biblioteca(s): Embrapa Florestas. |
| |
| 16. | | GATTO, D. A.; HASELEIN, C. R.; BULIGON, E. A.; CALEGARI, L.; STANGERLIN, D. M.; OLIVEIRA, L. da S.; SANTINI, E. J. Estimativa da idade de segregação do lenho juvenil e adulto por meio de parâmetros anatômicos para madeira de Luehea divaricata Mart. Ciência Florestal, Santa Maria, v. 18, n.3/4, p. 535-540, set./dez. 2008.| Biblioteca(s): Embrapa Florestas. |
| |
| 17. | | GATTO, D. A.; HASELEIN, C. R.; SANTINI, E. J.; MARCHIORI, J. N. C.; DURLO, M. A.; CALEGARI, L.; STANGERLIN, D. M. Características tecnológicas das madeiras de Luehea divaricata, Carya illinoinensis e Platanus x acerifolia quando submetidas ao vergamento. Ciência Florestal, Santa Maria, v. 18, n. 1/2, p. 121-131, jan./mar. 2008.| Biblioteca(s): Embrapa Florestas. |
| |
| 20. | | GATTO, D. A.; SANTINI, E. J.; HASELEIN, C. R.; DURLO, M. A.; CALEGARI, L. Produção madeireira na região da quarta colônia de imigração italiana do Rio Grande do Sul. Ciência Florestal, Santa Maria, v. 15, n. 1/2, p. 177-189, mar. 2005.| Biblioteca(s): Embrapa Florestas. |
| |
| Registros recuperados : 70 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
10/11/1997 |
|
Data da última atualização: |
27/01/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
HÖLSCHER, D.; MOLLER, M. R. F.; DENICH, M.; FÖLSTER, H. |
|
Afiliação: |
D. HÖLSCHER, UNIVERSITY OF GÖTTINGEN; MARIA REGINA FREIRE MOLLER, CPATU; M. DENICH, UNIVERSITY OF GÖTTINGEN; H. FÖLSTER, UNIVERSITY OF GÖTTINGEN. |
|
Título: |
Nutrient input-output budget of shifting agriculture in Eastern Amazonia. |
|
Ano de publicação: |
1997 |
|
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 47, n. 1, p. 49-57, 1997. |
|
DOI: |
https://doi.org/10.1007/BF01985718 |
|
Idioma: |
Inglês |
|
Conteúdo: |
A case study on the nutrient input-output budget of slash and burn agriculture was carried out in Northeast-Pará, Brazil, where such a land-use system has been practised for about 100 years. A common cropping period lasts for two years and the fields lie fallow for 4 to 8 years. We quantified rates of deposition, fertilization, and losses due to the burn, harvest and leaching. Six fields of different phases in the rotational cycle were under study during a 19 month period. During the fallow period, the input of Na, K, Mg, N, P and S via deposition exceeded the estimated losses with the seepage water. The Ca budget was almost balanced. The balance of fields in the transition from the fallow to the cropping phase was negative for Na, K, Ca, Mg, N, and S. The P balance was positive when NPK fertilizer was applied, and negative without fertilizer application. The nutrient balance for K, Mg, Ca, N, and P was also negative on the field in transition from the cropping to the fallow period. The nutrient budget for an entire land-use cycle of 9 years was estimated by the "false time series approach". In the case of an NPK fertilization during the cropping period there were net losses of 75 kg K ha?1, 125 kg Ca ha?1, 16 kg Mg ha?1, 285 kg N ha'1 and 13 kg S ha'1. Na (86 kg ha'1) and P (11 kg ha?1) were accumulated. The harvest was the most important flux for the K (61%) and P (62%) output. The element transfer into the atmosphere during the burn caused the main losses of N (60%), S (65%), Ca (58%) and Mg (41%). The most important path of Na loss was leaching (92%). The net K losses were severe as they represented 45% of the K store found extractable in the soil down to 1m depth and in the above ground biomass. The presented results may be useful in planning a sustainable and environmentally protective method of land-use within a shifting cultivation system. It is strongly recommended that slash burning be abandoned in order to keep the nutrients in the ecosystem. MenosA case study on the nutrient input-output budget of slash and burn agriculture was carried out in Northeast-Pará, Brazil, where such a land-use system has been practised for about 100 years. A common cropping period lasts for two years and the fields lie fallow for 4 to 8 years. We quantified rates of deposition, fertilization, and losses due to the burn, harvest and leaching. Six fields of different phases in the rotational cycle were under study during a 19 month period. During the fallow period, the input of Na, K, Mg, N, P and S via deposition exceeded the estimated losses with the seepage water. The Ca budget was almost balanced. The balance of fields in the transition from the fallow to the cropping phase was negative for Na, K, Ca, Mg, N, and S. The P balance was positive when NPK fertilizer was applied, and negative without fertilizer application. The nutrient balance for K, Mg, Ca, N, and P was also negative on the field in transition from the cropping to the fallow period. The nutrient budget for an entire land-use cycle of 9 years was estimated by the "false time series approach". In the case of an NPK fertilization during the cropping period there were net losses of 75 kg K ha?1, 125 kg Ca ha?1, 16 kg Mg ha?1, 285 kg N ha'1 and 13 kg S ha'1. Na (86 kg ha'1) and P (11 kg ha?1) were accumulated. The harvest was the most important flux for the K (61%) and P (62%) output. The element transfer into the atmosphere during the burn caused the main losses of N (60%), S (6... Mostrar Tudo |
|
Palavras-Chave: |
Brasil; Ciclagem de nutriente; Cycling; Pará; Zona Bragantina. |
|
Thesagro: |
Cultivo Migratório; Uso da Terra. |
|
Thesaurus NAL: |
Amazonia; land use; shifting cultivation. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02808naa a2200289 a 4500
001 1397796
005 2023-01-27
008 1997 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/BF01985718$2DOI
100 1 $aHÖLSCHER, D.
245 $aNutrient input-output budget of shifting agriculture in Eastern Amazonia.$h[electronic resource]
260 $c1997
520 $aA case study on the nutrient input-output budget of slash and burn agriculture was carried out in Northeast-Pará, Brazil, where such a land-use system has been practised for about 100 years. A common cropping period lasts for two years and the fields lie fallow for 4 to 8 years. We quantified rates of deposition, fertilization, and losses due to the burn, harvest and leaching. Six fields of different phases in the rotational cycle were under study during a 19 month period. During the fallow period, the input of Na, K, Mg, N, P and S via deposition exceeded the estimated losses with the seepage water. The Ca budget was almost balanced. The balance of fields in the transition from the fallow to the cropping phase was negative for Na, K, Ca, Mg, N, and S. The P balance was positive when NPK fertilizer was applied, and negative without fertilizer application. The nutrient balance for K, Mg, Ca, N, and P was also negative on the field in transition from the cropping to the fallow period. The nutrient budget for an entire land-use cycle of 9 years was estimated by the "false time series approach". In the case of an NPK fertilization during the cropping period there were net losses of 75 kg K ha?1, 125 kg Ca ha?1, 16 kg Mg ha?1, 285 kg N ha'1 and 13 kg S ha'1. Na (86 kg ha'1) and P (11 kg ha?1) were accumulated. The harvest was the most important flux for the K (61%) and P (62%) output. The element transfer into the atmosphere during the burn caused the main losses of N (60%), S (65%), Ca (58%) and Mg (41%). The most important path of Na loss was leaching (92%). The net K losses were severe as they represented 45% of the K store found extractable in the soil down to 1m depth and in the above ground biomass. The presented results may be useful in planning a sustainable and environmentally protective method of land-use within a shifting cultivation system. It is strongly recommended that slash burning be abandoned in order to keep the nutrients in the ecosystem.
650 $aAmazonia
650 $aland use
650 $ashifting cultivation
650 $aCultivo Migratório
650 $aUso da Terra
653 $aBrasil
653 $aCiclagem de nutriente
653 $aCycling
653 $aPará
653 $aZona Bragantina
700 1 $aMOLLER, M. R. F.
700 1 $aDENICH, M.
700 1 $aFÖLSTER, H.
773 $tNutrient Cycling in Agroecosystems$gv. 47, n. 1, p. 49-57, 1997.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
