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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
31/10/2007 |
Data da última atualização: |
11/01/2008 |
Autoria: |
DÜNISCH, O.; LIMA, V. C.; SEEHANN, G.; DONATH, J.; MONTÓIA, V. R.; SCHWARZ, T. |
Afiliação: |
Institute for Wood Biology and Wood Protection; Universidade Federal do Paraná; Otto Henneberg; Bolsista-CPAA. |
Título: |
Retention properties of wood residues and their potential for soil amelioration. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Wood Science and Technology, v. 41, n. 2, p. 169-189, fev. 2007. |
Idioma: |
Inglês |
Conteúdo: |
The particle size distribution, the nutrient content and the sorption behaviour of six solid wood and ash/charcoal residues collected in three wood-processing companies in Germany and Brazil were investigated in order to elucidate the potential of these residues for the development of new products for soil amelioration. The absorption of N, P, and K by the residues and the leaching of nutrients from impregnated samples were studied in the laboratory at substrate temperatures of 20 and 300°C. The release of elements by the impregnated samples and the sorption behaviour of ash/charcoal incorporated in the soil were also studied in the field on a temperate site (Hamburg, 53°32'N 09°59'E), on a subtropical site (Ivaí, 25°15'S 50°45'W), and on a tropical site (Aripuanã, 10°09'S 59°26'W). Under laboratory conditions the solid wood residues absorbed 2.0?9.1% of the N, 0.1?0.4% of the P, and 1.0?8.5% of the K available in the impregnation solution. At a temperature of 20°C, selected sieve fractions of the ash/charcoal residues absorbed up to twice as much as N and up to 100 times more K than the treated wood residues. The absorption of N, P, and K to the ash/charcoal residues increased significantly at a substrate temperature of 300°C compared to a substrate temperature of 20°C. In absolute numbers, the leaching of N, P, and K from the impregnated ash/charcoal residues was in the range of the release by the impregnated solid wood residues, whilst the relative rate of nutrient leaching was strongly reduced. The field experiments confirmed the results obtained in the laboratory and indicated that ash/charcoal residues are suitable raw materials for the development of new products for soil amelioration, in particular for application under humid climate conditions. MenosThe particle size distribution, the nutrient content and the sorption behaviour of six solid wood and ash/charcoal residues collected in three wood-processing companies in Germany and Brazil were investigated in order to elucidate the potential of these residues for the development of new products for soil amelioration. The absorption of N, P, and K by the residues and the leaching of nutrients from impregnated samples were studied in the laboratory at substrate temperatures of 20 and 300°C. The release of elements by the impregnated samples and the sorption behaviour of ash/charcoal incorporated in the soil were also studied in the field on a temperate site (Hamburg, 53°32'N 09°59'E), on a subtropical site (Ivaí, 25°15'S 50°45'W), and on a tropical site (Aripuanã, 10°09'S 59°26'W). Under laboratory conditions the solid wood residues absorbed 2.0?9.1% of the N, 0.1?0.4% of the P, and 1.0?8.5% of the K available in the impregnation solution. At a temperature of 20°C, selected sieve fractions of the ash/charcoal residues absorbed up to twice as much as N and up to 100 times more K than the treated wood residues. The absorption of N, P, and K to the ash/charcoal residues increased significantly at a substrate temperature of 300°C compared to a substrate temperature of 20°C. In absolute numbers, the leaching of N, P, and K from the impregnated ash/charcoal residues was in the range of the release by the impregnated solid wood residues, whilst the relative rate of nutrient leachi... Mostrar Tudo |
Palavras-Chave: |
Alemanha; Brasil; Resíduo de madeira; Retenção. |
Thesagro: |
Solo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02437naa a2200241 a 4500 001 1681337 005 2008-01-11 008 2007 bl --- 0-- u #d 100 1 $aDÜNISCH, O. 245 $aRetention properties of wood residues and their potential for soil amelioration. 260 $c2007 520 $aThe particle size distribution, the nutrient content and the sorption behaviour of six solid wood and ash/charcoal residues collected in three wood-processing companies in Germany and Brazil were investigated in order to elucidate the potential of these residues for the development of new products for soil amelioration. The absorption of N, P, and K by the residues and the leaching of nutrients from impregnated samples were studied in the laboratory at substrate temperatures of 20 and 300°C. The release of elements by the impregnated samples and the sorption behaviour of ash/charcoal incorporated in the soil were also studied in the field on a temperate site (Hamburg, 53°32'N 09°59'E), on a subtropical site (Ivaí, 25°15'S 50°45'W), and on a tropical site (Aripuanã, 10°09'S 59°26'W). Under laboratory conditions the solid wood residues absorbed 2.0?9.1% of the N, 0.1?0.4% of the P, and 1.0?8.5% of the K available in the impregnation solution. At a temperature of 20°C, selected sieve fractions of the ash/charcoal residues absorbed up to twice as much as N and up to 100 times more K than the treated wood residues. The absorption of N, P, and K to the ash/charcoal residues increased significantly at a substrate temperature of 300°C compared to a substrate temperature of 20°C. In absolute numbers, the leaching of N, P, and K from the impregnated ash/charcoal residues was in the range of the release by the impregnated solid wood residues, whilst the relative rate of nutrient leaching was strongly reduced. The field experiments confirmed the results obtained in the laboratory and indicated that ash/charcoal residues are suitable raw materials for the development of new products for soil amelioration, in particular for application under humid climate conditions. 650 $aSolo 653 $aAlemanha 653 $aBrasil 653 $aResíduo de madeira 653 $aRetenção 700 1 $aLIMA, V. C. 700 1 $aSEEHANN, G. 700 1 $aDONATH, J. 700 1 $aMONTÓIA, V. R. 700 1 $aSCHWARZ, T. 773 $tWood Science and Technology$gv. 41, n. 2, p. 169-189, fev. 2007.
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Embrapa Amazônia Ocidental (CPAA) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
03/03/2020 |
Data da última atualização: |
03/03/2020 |
Autoria: |
SANTIAGO, A. D.; SILVA, J. F. V.; ALVES, R. E.; SOUZA, T. W. de. |
Afiliação: |
ANTONIO DIAS SANTIAGO, CPATC; JOAO FLAVIO VELOSO SILVA, CNAT; RICARDO ELESBAO ALVES, CNAT; TENISSON WALDOW DE SOUZA, SIRE. |
Título: |
Prospecção: Centro de pesquisa da Embrapa no Estado de Alagoas. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Brasília, DF: Embrapa, 2016. |
Idioma: |
Português |
Conteúdo: |
Na elaboração do presente documento foram aplicadas entrevistas semiestruturadas aos principais atores e líderes vinculados a governança do estado de Alagoas, bem como representantes dos setores econômicos e sociais. As análises dos ambientes externo e interno foram realizadas com o intuito de compreender o ambiente para consecução do objetivo mencionado na citada portaria. Foram incorporadas ao estudo as estratégias do MAPA e da Embrapa, contidos, especialmente, no seu documento orientador sobre visão de futuros da empresa (Embrapa, 2014, documentos institucionais orientadores de gestão e informações disponibilizadas pelo governo estadual e instituições estatais e privadas. |
Palavras-Chave: |
Desenvolvimento agropecuário; Pesquisa agropecuária; Previsão orçamentária; Proposta de atuação. |
Thesagro: |
Gestão; Instituição de Pesquisa. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01320nam a2200217 a 4500 001 2120797 005 2020-03-03 008 2016 bl uuuu t 00u1 u #d 100 1 $aSANTIAGO, A. D. 245 $aProspecção$bCentro de pesquisa da Embrapa no Estado de Alagoas. 260 $aBrasília, DF: Embrapa$c2016 520 $aNa elaboração do presente documento foram aplicadas entrevistas semiestruturadas aos principais atores e líderes vinculados a governança do estado de Alagoas, bem como representantes dos setores econômicos e sociais. As análises dos ambientes externo e interno foram realizadas com o intuito de compreender o ambiente para consecução do objetivo mencionado na citada portaria. Foram incorporadas ao estudo as estratégias do MAPA e da Embrapa, contidos, especialmente, no seu documento orientador sobre visão de futuros da empresa (Embrapa, 2014, documentos institucionais orientadores de gestão e informações disponibilizadas pelo governo estadual e instituições estatais e privadas. 650 $aGestão 650 $aInstituição de Pesquisa 653 $aDesenvolvimento agropecuário 653 $aPesquisa agropecuária 653 $aPrevisão orçamentária 653 $aProposta de atuação 700 1 $aSILVA, J. F. V. 700 1 $aALVES, R. E. 700 1 $aSOUZA, T. W. de
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