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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
25/02/1999 |
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Data da última atualização: |
25/02/1999 |
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Autoria: |
ABOULROOS, S. A.; EL BEISSARY, E. A.; EL FALAKY, A. A. |
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Afiliação: |
Soils Department, Faculty of Agriculture< Cairo University, Giza (Egypt). |
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Título: |
Reactions of the iron chelates and the sodium salts of EDTA, DTPA and EDDHA with two alkaline soils, and their effectiveness during growth of barley. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Agro-Ecosystems, v.8, p.203-214, 1983. |
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Idioma: |
Inglês |
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Conteúdo: |
The behaviour of the iron chelates and sodium salts of EDTA, DTPA and EDDHA in calcareous (iron deficient) and alluvial (border-line iron deficient) soils and their effectiveness during plant growth were studied. The effectiveness of the iron chelates in maintaining soluble iron and in supplying barley with iron was in the order Fe-DDTA < Fe-DTPA < Fe-EDDHA. Replacement of iron by other cations in Fe-EDTA and Fe-DTPA, rather than adsorption of iron chelate by the soil, was the main factor influencing their effectiveness. The equilibrium of Fe-EDTA with soils was dominated by competition between iron and calcium, whereas that of Fe-DTPA was dominated by iron being in competition with manganese initially and with calcium, zinc and copper afterwards. The relative dominance of the chelate of the competing cation varied with soil type. Fe-EDDHA was neither adsorbed nor was its iron fixed by the soil to any great extent. The sodium salt of DTPA and EDDHA continually dissolved native soil iron but increased soluble manganese only temporarily. Dissolution of native zinc and copper was least with EDTA and EDDHA and most with DTPA. The sodium salts of the chelating agents were as effective as the iron chelates in supplying barley with iron in the alluvial soil, which was marginally deficient, whereas they were much less effective in the calcareous soil, where iron supply is a greater problem. |
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Palavras-Chave: |
Crescimento de cevada; Growth of barley; Iron chelates; Quelifero ferreo; Sais de sodio; Sodium salts. |
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Thesagro: |
Solo Alcalino. |
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Thesaurus Nal: |
alkaline soils. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02145naa a2200241 a 4500
001 1793698
005 1999-02-25
008 1983 bl --- 0-- u #d
100 1 $aABOULROOS, S. A.
245 $aReactions of the iron chelates and the sodium salts of EDTA, DTPA and EDDHA with two alkaline soils, and their effectiveness during growth of barley.
260 $c1983
520 $aThe behaviour of the iron chelates and sodium salts of EDTA, DTPA and EDDHA in calcareous (iron deficient) and alluvial (border-line iron deficient) soils and their effectiveness during plant growth were studied. The effectiveness of the iron chelates in maintaining soluble iron and in supplying barley with iron was in the order Fe-DDTA < Fe-DTPA < Fe-EDDHA. Replacement of iron by other cations in Fe-EDTA and Fe-DTPA, rather than adsorption of iron chelate by the soil, was the main factor influencing their effectiveness. The equilibrium of Fe-EDTA with soils was dominated by competition between iron and calcium, whereas that of Fe-DTPA was dominated by iron being in competition with manganese initially and with calcium, zinc and copper afterwards. The relative dominance of the chelate of the competing cation varied with soil type. Fe-EDDHA was neither adsorbed nor was its iron fixed by the soil to any great extent. The sodium salt of DTPA and EDDHA continually dissolved native soil iron but increased soluble manganese only temporarily. Dissolution of native zinc and copper was least with EDTA and EDDHA and most with DTPA. The sodium salts of the chelating agents were as effective as the iron chelates in supplying barley with iron in the alluvial soil, which was marginally deficient, whereas they were much less effective in the calcareous soil, where iron supply is a greater problem.
650 $aalkaline soils
650 $aSolo Alcalino
653 $aCrescimento de cevada
653 $aGrowth of barley
653 $aIron chelates
653 $aQuelifero ferreo
653 $aSais de sodio
653 $aSodium salts
700 1 $aEL BEISSARY, E. A.
700 1 $aEL FALAKY, A. A.
773 $tAgro-Ecosystems$gv.8, p.203-214, 1983.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
12/01/2004 |
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Data da última atualização: |
22/11/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NOGUEIRA, A. R. de A.; ARAÚJO, G. C. L.; NOBREGA, J. A. |
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Afiliação: |
ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Paspalum notatum roots as biosorbent for metals preconcentration. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: COLLOQUIM SPECTROSCOPICUM INTERNATIONALE, 33., 2003, Granada, Spain. Actas... Granada: Universidad de Granada, 2003. |
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Páginas: |
p.71 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Biosorbent; Biosorbent for metals; Preconcentration; Raizes. |
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Thesagro: |
Metal; Paspalum Notatum. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46770/1/PROCIARAN2003.00161.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/47422/1/PROCIARAN2003.00162.pdf
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Marc: |
LEADER 00640nam a2200205 a 4500
001 1046669
005 2011-11-22
008 2003 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, A. R. de A.
245 $aPaspalum notatum roots as biosorbent for metals preconcentration.
260 $aIn: COLLOQUIM SPECTROSCOPICUM INTERNATIONALE, 33., 2003, Granada, Spain. Actas... Granada: Universidad de Granada$c2003
300 $ap.71
650 $aMetal
650 $aPaspalum Notatum
653 $aBiosorbent
653 $aBiosorbent for metals
653 $aPreconcentration
653 $aRaizes
700 1 $aARAÚJO, G. C. L.
700 1 $aNOBREGA, J. A.
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Embrapa Pecuária Sudeste (CPPSE) |
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