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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Roraima. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
19/04/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
ZILLI, J. E.; MARSON, L. C.; XAVIER, G. R.; RUMJANEK, N. G. |
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Afiliação: |
Jerri Édson Zilli, CPAF-RR; Lendro Carvalho Marson, UFRR; Gustavo Ribeiro Xavier, Embrapa Agrobiologia; Norma Gouvêa Rumjanek, Embrapa Agrobiologia. |
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Título: |
Fixação Biológica de nitrogênio na cultura do feijão-caupi em Roraima. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: WORKSHOP SOBRE A CULTURA DO FEIJÃO-CAUPI EM RORAIMA, 2007, Boa Vista, RR. Anais... Boa Vista, RR: Embrapa Roraima, 2007. |
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Idioma: |
Português |
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Conteúdo: |
A fixação biológica de nitrogênio (FBN) é uma das mais importantes funções biológicas no solo para manutenção da vida na terra. |
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Palavras-Chave: |
FBN; Feijão-caupi; Fixação biológica de nitrogênio; Roraima. |
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Categoria do assunto: |
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Marc: |
LEADER 00778naa a2200205 a 4500
001 1691502
005 2012-04-19
008 2007 bl --- 0-- u #d
100 1 $aZILLI, J. E.
245 $aFixação Biológica de nitrogênio na cultura do feijão-caupi em Roraima.
260 $c2007
520 $aA fixação biológica de nitrogênio (FBN) é uma das mais importantes funções biológicas no solo para manutenção da vida na terra.
653 $aFBN
653 $aFeijão-caupi
653 $aFixação biológica de nitrogênio
653 $aRoraima
700 1 $aMARSON, L. C.
700 1 $aXAVIER, G. R.
700 1 $aRUMJANEK, N. G.
773 $tIn: WORKSHOP SOBRE A CULTURA DO FEIJÃO-CAUPI EM RORAIMA, 2007, Boa Vista, RR. Anais... Boa Vista, RR: Embrapa Roraima, 2007.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
21/09/2021 |
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Data da última atualização: |
21/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
ALLEONI, L. R. F.; PEIXOTO, R. T. dos G.; AZEVEDO, A. C. de; MELO, L. C. A. |
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Afiliação: |
LUIS REYNALDO FERRACCIU ALLEONI, ESALQ/USP; RICARDO TRIPPIA DOS G PEIXOTO, CNPS; ANTONIO CARLOS DE AZEVEDO, USP; LEONIDAS CARRIJO AZEVEDO MELO, USP. |
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Título: |
Components of surface charge in tropical soils with contrasting mineralogies. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Soil Science, v. 174, n. 11, p. 629-638, Nov. 2009. |
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DOI: |
http://doi.org/10.1097/SS.0b013e3181c17a93 |
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Idioma: |
Inglês |
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Conteúdo: |
Study of surface electric charges of soil colloids helps in understanding the physicochemical phenomena that influence the capacity of retaining nutrients and their availability to plants. The structural charge (sigma(0), (min)), the variable charge (sigma(q, min)), and the organic matter (OM) charge (sigma(total) (OM)) of 12 tropical soils with contrasting mineralogies were evaluated based on the difference of selectivity for Cs+ and Li+ between the functional ionizable surfaces groups and the mineral 2:1 siloxane surface. Soils were divided into three groups: G1, soils with a predominance of kaolinite and gibbsite in the clay fraction; G2, soils with hydroxy-interlayered 2:1 minerals; and G3, soils with smectite but without hydroxy-interlayered 2:1 minerals. The Cs absorption method was efficient for detecting the charge components in tropical soils. The mineral structural charge contributed 11% and 16%, 28% and 31%, and 52% and 59% of total soil charge of A and B horizons of soils from groups G 1, G2, and G3, respectively. On the other hand, OM contributed 53% and 37%, 48% and 41%, and 21% and 20% of total charge for the same samples, respectively, In highly weathered soils of group G I and, to a lesser extent, in soils in group G2, surface charges depended mainly on their variable components, resulting from the OM (sigma(toal) (OM)), as well as from imperfections found in 1:1 minerals (sigma(q, min)). The importance of OM in determining the magnitude of electric charges in humid tropical soils is highlighted. MenosStudy of surface electric charges of soil colloids helps in understanding the physicochemical phenomena that influence the capacity of retaining nutrients and their availability to plants. The structural charge (sigma(0), (min)), the variable charge (sigma(q, min)), and the organic matter (OM) charge (sigma(total) (OM)) of 12 tropical soils with contrasting mineralogies were evaluated based on the difference of selectivity for Cs+ and Li+ between the functional ionizable surfaces groups and the mineral 2:1 siloxane surface. Soils were divided into three groups: G1, soils with a predominance of kaolinite and gibbsite in the clay fraction; G2, soils with hydroxy-interlayered 2:1 minerals; and G3, soils with smectite but without hydroxy-interlayered 2:1 minerals. The Cs absorption method was efficient for detecting the charge components in tropical soils. The mineral structural charge contributed 11% and 16%, 28% and 31%, and 52% and 59% of total soil charge of A and B horizons of soils from groups G 1, G2, and G3, respectively. On the other hand, OM contributed 53% and 37%, 48% and 41%, and 21% and 20% of total charge for the same samples, respectively, In highly weathered soils of group G I and, to a lesser extent, in soils in group G2, surface charges depended mainly on their variable components, resulting from the OM (sigma(toal) (OM)), as well as from imperfections found in 1:1 minerals (sigma(q, min)). The importance of OM in determining the magnitude of electric charges ... Mostrar Tudo |
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Thesagro: |
Matéria Orgânica; Solo. |
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Thesaurus NAL: |
Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02176naa a2200205 a 4500
001 2134609
005 2021-09-21
008 2009 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.1097/SS.0b013e3181c17a93$2DOI
100 1 $aALLEONI, L. R. F.
245 $aComponents of surface charge in tropical soils with contrasting mineralogies.$h[electronic resource]
260 $c2009
520 $aStudy of surface electric charges of soil colloids helps in understanding the physicochemical phenomena that influence the capacity of retaining nutrients and their availability to plants. The structural charge (sigma(0), (min)), the variable charge (sigma(q, min)), and the organic matter (OM) charge (sigma(total) (OM)) of 12 tropical soils with contrasting mineralogies were evaluated based on the difference of selectivity for Cs+ and Li+ between the functional ionizable surfaces groups and the mineral 2:1 siloxane surface. Soils were divided into three groups: G1, soils with a predominance of kaolinite and gibbsite in the clay fraction; G2, soils with hydroxy-interlayered 2:1 minerals; and G3, soils with smectite but without hydroxy-interlayered 2:1 minerals. The Cs absorption method was efficient for detecting the charge components in tropical soils. The mineral structural charge contributed 11% and 16%, 28% and 31%, and 52% and 59% of total soil charge of A and B horizons of soils from groups G 1, G2, and G3, respectively. On the other hand, OM contributed 53% and 37%, 48% and 41%, and 21% and 20% of total charge for the same samples, respectively, In highly weathered soils of group G I and, to a lesser extent, in soils in group G2, surface charges depended mainly on their variable components, resulting from the OM (sigma(toal) (OM)), as well as from imperfections found in 1:1 minerals (sigma(q, min)). The importance of OM in determining the magnitude of electric charges in humid tropical soils is highlighted.
650 $aSoil organic matter
650 $aMatéria Orgânica
650 $aSolo
700 1 $aPEIXOTO, R. T. dos G.
700 1 $aAZEVEDO, A. C. de
700 1 $aMELO, L. C. A.
773 $tSoil Science$gv. 174, n. 11, p. 629-638, Nov. 2009.
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