|
|
Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
08/06/1998 |
Data da última atualização: |
08/06/1998 |
Autoria: |
NOVAIS, R. F. de; BARROS, N. F. de. |
Título: |
Sustainable agriculture and forestry production systems on acid soils: phosphorus as a case-study. |
Ano de publicação: |
1997 |
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. |
Páginas: |
p.39-51. |
Idioma: |
Inglês |
Notas: |
Trabalho apresentado no "Fourth International Symposium on Plant-Soil Interactions at low pH, Belo Horizonte, MG, Brazil, Mar. 1996". |
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 |
Palavras-Chave: |
Brasil; Forestry production; Sustainability; Sustentabilidade. |
Thesagro: |
Agricultura; Cerrado; Fósforo; Produção Florestal; Solo Ácido. |
Thesaurus Nal: |
acid soils; agriculture; Brazil; phosphorus. |
Categoria do assunto: |
-- |
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Cerrados (CPAC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
13/02/2017 |
Data da última atualização: |
19/05/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
RODRIGUES, G. S.; KITAMURA, P. C.; SÁ, T. D. de A.; VIELHAUER, K. |
Afiliação: |
GERALDO STACHETTI RODRIGUES, CNPMA; PAULO CHOJI KITAMURA, CNPMA; TATIANA DEANE DE ABREU SA, CPATU; KONRAD VIELHAUER, University of Bonn. |
Título: |
Sustainability assessment of slash-and-burn and fire-free agriculture in Northeastern Pará, Brazil. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Separata de: BIENNIAL EMERGY CONFERENCE, 2., Gainesville. Theory and applications of the emergy methodology. Gainesville: University of Florida, 2004. |
Páginas: |
p. 95-107. |
Idioma: |
Inglês |
Palavras-Chave: |
Pará. |
Thesagro: |
Agricultura; Condição Ambiental; Desenvolvimento Sustentável. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162595/1/SEPARATAS-7998.pdf
|
Marc: |
LEADER 00715nam a2200193 a 4500 001 2063919 005 2022-05-19 008 2004 bl uuuu u00u1 u #d 100 1 $aRODRIGUES, G. S. 245 $aSustainability assessment of slash-and-burn and fire-free agriculture in Northeastern Pará, Brazil.$h[electronic resource] 260 $aSeparata de: BIENNIAL EMERGY CONFERENCE, 2., Gainesville. Theory and applications of the emergy methodology. Gainesville: University of Florida$c2004 300 $ap. 95-107. 650 $aAgricultura 650 $aCondição Ambiental 650 $aDesenvolvimento Sustentável 653 $aPará 700 1 $aKITAMURA, P. C. 700 1 $aSÁ, T. D. de A. 700 1 $aVIELHAUER, K.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|