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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Arroz e Feijão. |
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Data corrente: |
08/06/1993 |
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Data da última atualização: |
19/04/2024 |
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Autoria: |
MORAES, J. F. V. |
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Afiliação: |
JOSE FRANCISCO VALENTE MORAES, CNPAF. |
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Título: |
Effect of phosphate on zinc adsorption on aluminum and iron hydrous oxides and in soils. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Riverside: University of California, 1982. |
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Páginas: |
142 p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado. |
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Conteúdo: |
Zinc deficieny has been recognized as one of the most important micronutrient deficiencies in highly weathered soils from the humid tropics. Soil phosphate and phosphate fertilizers crops. Two sets of experiments were conducted to study the effect of P on the amount of Zn adsorbed on freshly precipitated and aged Al and Fe hydrous oxides and in soils. The main difference among the experiments, in each set, was the order which Zn and P solutions were equilibrated with hydrous oxides and soils. Specifically, the experiments were designed to study (i) the adsorption of Zn on hydrous oxides and soils, (ii) the effect of previous treatment with P on Zn adsorption on hydrous oxides and soils, and (iii) Zn adsorption on hydrous oxides from a solution containing Zn and P. The amount of Zn desorbed by 0.5 M BaC12 solution was also determined in all experiments. One experiment with soils was conducted to evaluate the effect of P on DTPA-extractable Zn. The increased Zn adsorption on freshly precipitated A1 hydrous oxide as a result of P treatment was mainly on oxide surfaces. But, the increased Zn adsorption on aged A1 hydrous oxide and on both freshly precipitated and aged Fe hydrous oxides, as a result of P treatmen, was mainly on adsorbed P. No differences were observed among the P treatments concerning the amounts of Zn desorbed by BaC12 solutions. The second study was carried out with four acid soils from Brazil and one kaolinitic soil from California. The effect of P in enhancing Zn adsorption was much greater on the Brazilian soils than on Californian soil. However, in all soils, the amounts of Zn desorbed by BaC12 solution were independent of P treatments. Phosphate did not affect the amount of Zn extracted with DTPA solutions in any of the five soils studied. MenosZinc deficieny has been recognized as one of the most important micronutrient deficiencies in highly weathered soils from the humid tropics. Soil phosphate and phosphate fertilizers crops. Two sets of experiments were conducted to study the effect of P on the amount of Zn adsorbed on freshly precipitated and aged Al and Fe hydrous oxides and in soils. The main difference among the experiments, in each set, was the order which Zn and P solutions were equilibrated with hydrous oxides and soils. Specifically, the experiments were designed to study (i) the adsorption of Zn on hydrous oxides and soils, (ii) the effect of previous treatment with P on Zn adsorption on hydrous oxides and soils, and (iii) Zn adsorption on hydrous oxides from a solution containing Zn and P. The amount of Zn desorbed by 0.5 M BaC12 solution was also determined in all experiments. One experiment with soils was conducted to evaluate the effect of P on DTPA-extractable Zn. The increased Zn adsorption on freshly precipitated A1 hydrous oxide as a result of P treatment was mainly on oxide surfaces. But, the increased Zn adsorption on aged A1 hydrous oxide and on both freshly precipitated and aged Fe hydrous oxides, as a result of P treatmen, was mainly on adsorbed P. No differences were observed among the P treatments concerning the amounts of Zn desorbed by BaC12 solutions. The second study was carried out with four acid soils from Brazil and one kaolinitic soil from California. The effect of P in enhancin... Mostrar Tudo |
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Palavras-Chave: |
Adsorcao de fosfato; Adsorcao de zinco; Aluminium; Hidroxo de aluminio; Propriedade fisico-quimica do solo; Soil chemicophysical properties; Solos. |
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Thesagro: |
Alumínio; Deficiência; Fertilidade; Fósforo; Oxido de Ferro; Zinco. |
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Thesaurus Nal: |
adsorption; hydroxides; iron; oxides; phosphates; zinc. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02738nam a2200361 a 4500
001 1191507
005 2024-04-19
008 1982 bl uuuu m 00u1 u #d
100 1 $aMORAES, J. F. V.
245 $aEffect of phosphate on zinc adsorption on aluminum and iron hydrous oxides and in soils.
260 $aRiverside: University of California$c1982
300 $a142 p.
500 $aTese Doutorado.
520 $aZinc deficieny has been recognized as one of the most important micronutrient deficiencies in highly weathered soils from the humid tropics. Soil phosphate and phosphate fertilizers crops. Two sets of experiments were conducted to study the effect of P on the amount of Zn adsorbed on freshly precipitated and aged Al and Fe hydrous oxides and in soils. The main difference among the experiments, in each set, was the order which Zn and P solutions were equilibrated with hydrous oxides and soils. Specifically, the experiments were designed to study (i) the adsorption of Zn on hydrous oxides and soils, (ii) the effect of previous treatment with P on Zn adsorption on hydrous oxides and soils, and (iii) Zn adsorption on hydrous oxides from a solution containing Zn and P. The amount of Zn desorbed by 0.5 M BaC12 solution was also determined in all experiments. One experiment with soils was conducted to evaluate the effect of P on DTPA-extractable Zn. The increased Zn adsorption on freshly precipitated A1 hydrous oxide as a result of P treatment was mainly on oxide surfaces. But, the increased Zn adsorption on aged A1 hydrous oxide and on both freshly precipitated and aged Fe hydrous oxides, as a result of P treatmen, was mainly on adsorbed P. No differences were observed among the P treatments concerning the amounts of Zn desorbed by BaC12 solutions. The second study was carried out with four acid soils from Brazil and one kaolinitic soil from California. The effect of P in enhancing Zn adsorption was much greater on the Brazilian soils than on Californian soil. However, in all soils, the amounts of Zn desorbed by BaC12 solution were independent of P treatments. Phosphate did not affect the amount of Zn extracted with DTPA solutions in any of the five soils studied.
650 $aadsorption
650 $ahydroxides
650 $airon
650 $aoxides
650 $aphosphates
650 $azinc
650 $aAlumínio
650 $aDeficiência
650 $aFertilidade
650 $aFósforo
650 $aOxido de Ferro
650 $aZinco
653 $aAdsorcao de fosfato
653 $aAdsorcao de zinco
653 $aAluminium
653 $aHidroxo de aluminio
653 $aPropriedade fisico-quimica do solo
653 $aSoil chemicophysical properties
653 $aSolos
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
28/01/2008 |
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Data da última atualização: |
16/02/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
COSER, T. R.; PARRON, L. M.; RAMOS, A. K. B. |
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Afiliação: |
T. T. Coser; Lucília Maria Parron, CPAC; ALLAN KARDEC BRAGA RAMOS, CPAC. |
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Título: |
Consórcio de espécies florestais nativas do cerrado com leguminosas forrageiras para recuperação de nascente do Córrego Pindaíba, DF. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: ENCONTRO DE JOVENS TALENTOS DA EMBRAPA CERRADOS, 3., 2007, Planaltina, DF. Resumos apresentados. Planaltina, DF: Embrapa Cerrados, 2007. p. 67. |
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Série: |
(Embrapa Cerrados. Documentos, 176). |
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Idioma: |
Português |
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Thesagro: |
Árvore; Cerrado; Leguminosa Forrageira. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2010/28193/1/doc-176.pdf
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Marc: |
LEADER 00678nam a2200169 a 4500
001 1570489
005 2012-02-16
008 2007 bl uuuu u00u1 u #d
100 1 $aCOSER, T. R.
245 $aConsórcio de espécies florestais nativas do cerrado com leguminosas forrageiras para recuperação de nascente do Córrego Pindaíba, DF.
260 $aIn: ENCONTRO DE JOVENS TALENTOS DA EMBRAPA CERRADOS, 3., 2007, Planaltina, DF. Resumos apresentados. Planaltina, DF: Embrapa Cerrados, 2007. p. 67.$c2007
490 $a(Embrapa Cerrados. Documentos, 176).
650 $aÁrvore
650 $aCerrado
650 $aLeguminosa Forrageira
700 1 $aPARRON, L. M.
700 1 $aRAMOS, A. K. B.
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Embrapa Cerrados (CPAC) |
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