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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
23/10/1996 |
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Data da última atualização: |
08/09/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOUSA, F. B. de; ARAÚJO, M. R. A. de. |
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Afiliação: |
FRANCISCO BENI DE SOUSA, CNPC; MARCELO RENATO ALVES DE ARAÚJO, CNPC. |
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Título: |
Avaliação de genótipos de leucena na região semi-árida do Ceará. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringá. Anais... Maringá: Sociedade Brasileira de Zootecnia, 1994. p. 257. |
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Idioma: |
Português |
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Palavras-Chave: |
Avaliação; Brasil; Ceará; Evaluation; Nordeste; Northeast; Semiárido. |
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Thesagro: |
Genótipo; Leguminosa; Leucaena; Planta forrageira. |
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Thesaurus Nal: |
Brazil; Forage grasses; Genotype; Legumes; Rangelands; Semiarid zones. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/45996/1/RAC-Avaliacao-de-genotipos.pdf
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Marc: |
LEADER 00921nam a2200313 a 4500
001 1514580
005 2021-09-08
008 1994 bl uuuu u00u1 u #d
100 1 $aSOUSA, F. B. de
245 $aAvaliação de genótipos de leucena na região semi-árida do Ceará.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringá. Anais... Maringá: Sociedade Brasileira de Zootecnia, 1994. p. 257.$c1994
650 $aBrazil
650 $aForage grasses
650 $aGenotype
650 $aLegumes
650 $aRangelands
650 $aSemiarid zones
650 $aGenótipo
650 $aLeguminosa
650 $aLeucaena
650 $aPlanta forrageira
653 $aAvaliação
653 $aBrasil
653 $aCeará
653 $aEvaluation
653 $aNordeste
653 $aNortheast
653 $aSemiárido
700 1 $aARAÚJO, M. R. A. de
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
21/07/1999 |
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Data da última atualização: |
15/04/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGBENIN, J. O.; ABREU, C. A. de; RAIJ, B. van. |
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Afiliação: |
JOHN O. AGBENIN; CLEIDE A. DE ABREU, IAC/CAMPINAS; BERNARDO VAN RAIJ, CNPMA. |
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Título: |
Extraction of phytoavailable trace metals from tropical soils by mixed ion exchange resin modified with inorganic and organic ligands. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Science of the Total Environment, v.227, p.187-196, 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
Chelating agents and organic acid ligands readily solubilize trace and heavy metals in soils. We compared Fe, Mn, Cu and Zn extracted from 16 soils by a mixed ion exchange resin (Amberlite IRA-120 + Amberlite IRA-400) modified with six simple inorganic and organic acid ligands with a conventional chelating agent (DTPA) and biossay. The mixed cation-anion exchange resins were saturated with Na-salts of chloride (R-CHL), bicarbonate (R-BIC), fluoride (R-FLU), acetate (R-ACT), citrate (R-CIT) and tartrate (R-TAR). Solubilization and adsorption of Fe and Cu from the soils By resin-ligand systems decreased in the order R-CIT >_ R-FLU >_ R-TAR = R-ACT > R-CHL = R-BIC reflecting differential stability of Fe- and Cu-organic/inorganic complexes. The R-CHL solubilized and adsorbed more Mn and Zn than other resin-ligand systems because of the relatively low pH maintained by the R-CHL-soil suspension. Extraction with DTPA gave similar amounts of Fe and Mn as resin-ligand systems, but DTPA extracted two to three times more Cu and Zn than resin. Resin-extractable Fe, Mn and Cu correlated with the corresponding DTPA-extractable metal contents, while both resin- and DTPA-extractable Cu correlated with the bioassay results. The R-ACT and R-TAR extractable Zn correlated more strongly with the biossay results than DTPA-extractable Zn. Mixed ion exchange resin is apparently feasible for characterizing plant available Fe, Mn, Cu and Zn in soils. |
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Palavras-Chave: |
Bioassay; Chemical extraction; Effect; Resin extraction. |
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Thesaurus NAL: |
agriculture; soil properties. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02131naa a2200217 a 4500
001 1013137
005 2019-04-15
008 1999 bl uuuu u00u1 u #d
100 1 $aAGBENIN, J. O.
245 $aExtraction of phytoavailable trace metals from tropical soils by mixed ion exchange resin modified with inorganic and organic ligands.$h[electronic resource]
260 $c1999
520 $aChelating agents and organic acid ligands readily solubilize trace and heavy metals in soils. We compared Fe, Mn, Cu and Zn extracted from 16 soils by a mixed ion exchange resin (Amberlite IRA-120 + Amberlite IRA-400) modified with six simple inorganic and organic acid ligands with a conventional chelating agent (DTPA) and biossay. The mixed cation-anion exchange resins were saturated with Na-salts of chloride (R-CHL), bicarbonate (R-BIC), fluoride (R-FLU), acetate (R-ACT), citrate (R-CIT) and tartrate (R-TAR). Solubilization and adsorption of Fe and Cu from the soils By resin-ligand systems decreased in the order R-CIT >_ R-FLU >_ R-TAR = R-ACT > R-CHL = R-BIC reflecting differential stability of Fe- and Cu-organic/inorganic complexes. The R-CHL solubilized and adsorbed more Mn and Zn than other resin-ligand systems because of the relatively low pH maintained by the R-CHL-soil suspension. Extraction with DTPA gave similar amounts of Fe and Mn as resin-ligand systems, but DTPA extracted two to three times more Cu and Zn than resin. Resin-extractable Fe, Mn and Cu correlated with the corresponding DTPA-extractable metal contents, while both resin- and DTPA-extractable Cu correlated with the bioassay results. The R-ACT and R-TAR extractable Zn correlated more strongly with the biossay results than DTPA-extractable Zn. Mixed ion exchange resin is apparently feasible for characterizing plant available Fe, Mn, Cu and Zn in soils.
650 $aagriculture
650 $asoil properties
653 $aBioassay
653 $aChemical extraction
653 $aEffect
653 $aResin extraction
700 1 $aABREU, C. A. de
700 1 $aRAIJ, B. van
773 $tScience of the Total Environment$gv.227, p.187-196, 1999.
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Embrapa Meio Ambiente (CNPMA) |
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