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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
08/06/1998 |
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Data da última atualização: |
08/06/1998 |
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Autoria: |
NOVAIS, R. F. de; BARROS, N. F. de. |
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Título: |
Sustainable agriculture and forestry production systems on acid soils: phosphorus as a case-study. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: MONIZ, A.C.; FURLANI, A.M.C.; SCHAFFERT, R.E.; FAGERIA, N.K.; ROSOLEM, C.A.; CANTARELLA, H., ed. Plant-soil interactions at low pH: sustainable agriculture and forestry production. Campinas: Brazilian Soil Science Society, 1997. |
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Páginas: |
p.39-51. |
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Idioma: |
Inglês |
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Notas: |
Trabalho apresentado no "Fourth International Symposium on Plant-Soil Interactions at low pH, Belo Horizonte, MG, Brazil, Mar. 1996". |
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Conteúdo: |
In the Cerrado region of Central Brazil, phosphorus is intimately related to crop productivity in newly-opened areas with highly weathered and acid soils. This nutrient is also important in governing sustainable agricultural use of these soils during continuous cultivation, when the soil P availability is no longer the major limiting factor for plant growth. Thus, before adressing sustainable use of these soils we need to correct the soil P status to a non-limiting level for economical production. Chemical and mineralogical characteristics of these soil impose strong limitations to the correction of their natural very low available P levels. Curiously, mos of these characteristics also are responsible for maintaining the focus of their sustainable use on plant P nutrition and the long-term balance of this nutrient in soil-plant system. In this work we present data about P as a limiting factor of economical use of Cerrado soils, emphasizing the great resistance to changes in the P status in most of these soils. The soybean-corn sequence, as a farm's solutin to economically cultivate new areas is discussed. In a second part of this work, forest productivity and its sustainability in these acid soils is discussed. Soil mineral and soil water deficientes are emphasized. The retention of nutrients in the biomass produced on these poor soils is analyzed, as a condition for sustainable forest production. Some management practices to improve the sustainability of these systems are discussed. MenosIn the Cerrado region of Central Brazil, phosphorus is intimately related to crop productivity in newly-opened areas with highly weathered and acid soils. This nutrient is also important in governing sustainable agricultural use of these soils during continuous cultivation, when the soil P availability is no longer the major limiting factor for plant growth. Thus, before adressing sustainable use of these soils we need to correct the soil P status to a non-limiting level for economical production. Chemical and mineralogical characteristics of these soil impose strong limitations to the correction of their natural very low available P levels. Curiously, mos of these characteristics also are responsible for maintaining the focus of their sustainable use on plant P nutrition and the long-term balance of this nutrient in soil-plant system. In this work we present data about P as a limiting factor of economical use of Cerrado soils, emphasizing the great resistance to changes in the P status in most of these soils. The soybean-corn sequence, as a farm's solutin to economically cultivate new areas is discussed. In a second part of this work, forest productivity and its sustainability in these acid soils is discussed. Soil mineral and soil water deficientes are emphasized. The retention of nutrients in the biomass produced on these poor soils is analyzed, as a condition for sustainable forest production. Some management practices to improve the sustainability of these systems are d... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Forestry production; Sustainability; Sustentabilidade. |
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Thesagro: |
Agricultura; Cerrado; Fósforo; Produção Florestal; Solo Ácido. |
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Thesaurus Nal: |
acid soils; agriculture; Brazil; phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02643naa a2200313 a 4500
001 1554271
005 1998-06-08
008 1997 bl uuuu u00u1 u #d
100 1 $aNOVAIS, R. F. de
245 $aSustainable agriculture and forestry production systems on acid soils$bphosphorus as a case-study.
260 $c1997
300 $ap.39-51.
500 $aTrabalho apresentado no "Fourth International Symposium on Plant-Soil Interactions at low pH, Belo Horizonte, MG, Brazil, Mar. 1996".
520 $aIn the Cerrado region of Central Brazil, phosphorus is intimately related to crop productivity in newly-opened areas with highly weathered and acid soils. This nutrient is also important in governing sustainable agricultural use of these soils during continuous cultivation, when the soil P availability is no longer the major limiting factor for plant growth. Thus, before adressing sustainable use of these soils we need to correct the soil P status to a non-limiting level for economical production. Chemical and mineralogical characteristics of these soil impose strong limitations to the correction of their natural very low available P levels. Curiously, mos of these characteristics also are responsible for maintaining the focus of their sustainable use on plant P nutrition and the long-term balance of this nutrient in soil-plant system. In this work we present data about P as a limiting factor of economical use of Cerrado soils, emphasizing the great resistance to changes in the P status in most of these soils. The soybean-corn sequence, as a farm's solutin to economically cultivate new areas is discussed. In a second part of this work, forest productivity and its sustainability in these acid soils is discussed. Soil mineral and soil water deficientes are emphasized. The retention of nutrients in the biomass produced on these poor soils is analyzed, as a condition for sustainable forest production. Some management practices to improve the sustainability of these systems are discussed.
650 $aacid soils
650 $aagriculture
650 $aBrazil
650 $aphosphorus
650 $aAgricultura
650 $aCerrado
650 $aFósforo
650 $aProdução Florestal
650 $aSolo Ácido
653 $aBrasil
653 $aForestry production
653 $aSustainability
653 $aSustentabilidade
700 1 $aBARROS, N. F. de
773 $tIn: MONIZ, A.C.; FURLANI, A.M.C.; SCHAFFERT, R.E.; FAGERIA, N.K.; ROSOLEM, C.A.; CANTARELLA, H., ed. Plant-soil interactions at low pH: sustainable agriculture and forestry production. Campinas: Brazilian Soil Science Society, 1997.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
28/04/2003 |
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Data da última atualização: |
11/07/2005 |
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Autoria: |
BRANCALHÃO, R. M. C.; TORQUATO, E. F. B.; CASTRO, M. E. B. de. |
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Título: |
Identificação de um isolado de Bombyx mori multiple nucleopolyhedrovirus (BmMNPV) no Estado do Paraná, Brasil. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Brasilia: Embrapa Recursos Geneticos e Biotecnologia, 2002. |
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Páginas: |
10 p. |
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Série: |
(Embrapa Recursos Genéticos e Biotecnologia. Boletim de Pesquisa e Deselvolvimento, 33). |
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Idioma: |
Português |
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Conteúdo: |
Sericultura é uma importante atividade agrícola no Brasil; 97% da produção nacional é destinada à exportação e o Estado do Paraná contribui com 83,59% da produção nacional. Contudo, a produção de fios de seda no Brasil é baixa quando comparada à de outros países, principalmente devido à ocorrência de doenças nas criações do bicho-da-seda. Entre estas doenças as de etiologia viral ocupam um importante posição. Lagartas do bicho-da-seda saudáveis e doentes foram obtidas de indústrias sericícolas e em locais de criação nas regiões nordeste, oeste e sudoeste do Estado do Paraná. |
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Palavras-Chave: |
Brasil; Nucleopolyhedrovirus; Parana. |
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Thesagro: |
Bicho da Seda; Bombyx Mori. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CENARGEN/23534/1/bp033.pdf
https://www.cenargen.embrapa.br/publica/trabalhos/bp033.pdf
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Marc: |
LEADER 01335nam a2200217 a 4500
001 1175287
005 2005-07-11
008 2002 bl uuuu u0uu1 u #d
100 1 $aBRANCALHÃO, R. M. C.
245 $aIdentificação de um isolado de Bombyx mori multiple nucleopolyhedrovirus (BmMNPV) no Estado do Paraná, Brasil.
260 $aBrasilia: Embrapa Recursos Geneticos e Biotecnologia$c2002
300 $a10 p.
490 $a(Embrapa Recursos Genéticos e Biotecnologia. Boletim de Pesquisa e Deselvolvimento, 33).
520 $aSericultura é uma importante atividade agrícola no Brasil; 97% da produção nacional é destinada à exportação e o Estado do Paraná contribui com 83,59% da produção nacional. Contudo, a produção de fios de seda no Brasil é baixa quando comparada à de outros países, principalmente devido à ocorrência de doenças nas criações do bicho-da-seda. Entre estas doenças as de etiologia viral ocupam um importante posição. Lagartas do bicho-da-seda saudáveis e doentes foram obtidas de indústrias sericícolas e em locais de criação nas regiões nordeste, oeste e sudoeste do Estado do Paraná.
650 $aBicho da Seda
650 $aBombyx Mori
653 $aBrasil
653 $aNucleopolyhedrovirus
653 $aParana
700 1 $aTORQUATO, E. F. B.
700 1 $aCASTRO, M. E. B. de
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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