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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
16/06/2004 |
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Data da última atualização: |
16/06/2004 |
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Autoria: |
KANDA, K.; MIRANDA, C. H. B.; TAKAHASHI. M.; MACEDO, M. C. M. |
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Afiliação: |
JIRCAS (Owashi, Japão). |
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Título: |
Nitrogen dynamics in agro-pastoral system of Brazil. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: SUENAGA, K.; OSHIBE, A.; TANIGUHI, T. (Ed.). Development of sustainable agro-pastoral systems in the subtropical zone of Brazil. Tsukuba: JIRCAS, 2004. |
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Páginas: |
p. 19-23. |
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Série: |
(JIRCAS. Working Report, 36). |
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Idioma: |
Inglês |
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Notas: |
CNPGC. Proceedings of the Workshop on the results and prospects of comprehensive studies on the development of sustainable agro-pastoral systems in the subtropical zone of Brazil, 2003.
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Conteúdo: |
In 1999, soil samples were taken from a field experiment on agro-pastoral system initiated in 1993 in a Purple Red Latosol in Campo Grande, MS, Brazil, from a) a field with continuous soybean cropping; b) a field with soybean cultivation after 4 years of use as a grassland (rotational soybean); c)continuous grassland; d) grassland planted after 4 years of soybean cultivation (rotational grassland), e) degraded grassland; and f) original Cerrados forest. Total C and N contents and mineralization potentials were determined. For C and N mineralization studies we developed a new anaerobic incubatio method. Results obtained indicated that replacement of the Cerrados forest by a pure grassland and exploitation without proper cattle management and fertilizer application led to a decrease in both total C and N contents. Continuous cultivation of soybean on such a degrated grassland area induced a further decrease, which could be alleviated by rotation with a grassland. On the other hand, soil C and N mineralization potentials were not appreciably affected, indicatingthat grassland degradation did not affect these parameters. Further, we studied nitrogen flow under this agro-pastoral system. A large negative N balance was estimated in the soybean fields, whereas the N balance in the grasslands was slightly negative. |
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Palavras-Chave: |
Agropastoral systems; Brasil; Brazilian savannas; Integração agricultura pecuária. |
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Thesagro: |
Cerrado; Nitrogênio. |
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Thesaurus Nal: |
Brazil; nitrogen. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02384naa a2200289 a 4500
001 1325526
005 2004-06-16
008 2004 bl uuuu u00u1 u #d
100 1 $aKANDA, K.
245 $aNitrogen dynamics in agro-pastoral system of Brazil.
260 $c2004
300 $ap. 19-23.
490 $a(JIRCAS. Working Report, 36).
500 $aCNPGC. Proceedings of the Workshop on the results and prospects of comprehensive studies on the development of sustainable agro-pastoral systems in the subtropical zone of Brazil, 2003.
520 $aIn 1999, soil samples were taken from a field experiment on agro-pastoral system initiated in 1993 in a Purple Red Latosol in Campo Grande, MS, Brazil, from a) a field with continuous soybean cropping; b) a field with soybean cultivation after 4 years of use as a grassland (rotational soybean); c)continuous grassland; d) grassland planted after 4 years of soybean cultivation (rotational grassland), e) degraded grassland; and f) original Cerrados forest. Total C and N contents and mineralization potentials were determined. For C and N mineralization studies we developed a new anaerobic incubatio method. Results obtained indicated that replacement of the Cerrados forest by a pure grassland and exploitation without proper cattle management and fertilizer application led to a decrease in both total C and N contents. Continuous cultivation of soybean on such a degrated grassland area induced a further decrease, which could be alleviated by rotation with a grassland. On the other hand, soil C and N mineralization potentials were not appreciably affected, indicatingthat grassland degradation did not affect these parameters. Further, we studied nitrogen flow under this agro-pastoral system. A large negative N balance was estimated in the soybean fields, whereas the N balance in the grasslands was slightly negative.
650 $aBrazil
650 $anitrogen
650 $aCerrado
650 $aNitrogênio
653 $aAgropastoral systems
653 $aBrasil
653 $aBrazilian savannas
653 $aIntegração agricultura pecuária
700 1 $aMIRANDA, C. H. B.
700 1 $aTAKAHASHI. M.
700 1 $aMACEDO, M. C. M.
773 $tIn: SUENAGA, K.; OSHIBE, A.; TANIGUHI, T. (Ed.). Development of sustainable agro-pastoral systems in the subtropical zone of Brazil. Tsukuba: JIRCAS, 2004.
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Embrapa Gado de Corte (CNPGC) |
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| 3. |  | SILVA JUNIOR, J. F. da; BEZERRA, J. E. F.; LEDERMAN, I. E.; MOURA, R. J. M. de. O sapotizeiro no Brasil. Revista Brasileira de Fruticultura, Jaboticabal, SP, v. 36, n. 1, p. 086-099, mar. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 4. | | BEZERRA, J. E. F.; LEDERMAN, I. E.; SILVA JUNIOR, J. F. da; LIRA JUNIOR, J. S. de; MOURA, R. J. M. de; SILVA, M. F. F. da. Banco ativo de germoplasma de fruteiras nativas e exóticas do Instituto Agronômico de Pernambuco. In: WORKSHOP DE CURADORES DE GERMOPLASMA DO BRASIL, 2011, Campinas, SP. Anais... Brasília: Embrapa Recursos Genéticos e Biotecnologia, 2011. Resumo em anais.| Tipo: Resumo em Anais de Congresso |
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