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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
02/03/1999 |
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Data da última atualização: |
02/03/1999 |
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Autoria: |
LINDSAY, W. L. |
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Afiliação: |
Department of Agronomy, Colorado State University, Fort Collins, Colorado. |
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Título: |
Soil and plant relationships associated with iron deficiency with emphasis on nutrient interactions. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Journal of Plant Nutrition, v.7, n.1/5, p.489-500, 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
The major cause of iron deficiency in plants is the insolubility of Fe (III) oxides in soils. Minimum solubility occurs in the pH range of 7.4 to 8.5 where the dominant solution species Fe(OH)3 is present at approximately 10-10.4M. The critical level of soluble iron for plants is approximately 10-8M, so the ferric oxides are too insoluble to supply adequate iron to plants unless modifying factors intervene. Major factors that modifity iron solubility relationships insoils include oxidation-reduction processes and the presence of chelating agents. Reduction processes near respiring plant roots enable ferric chelates to dissociate and Fe3+ to reduce to Fe2+. It is necessary for Fe2+ to increase above the critical level to supply adequate iron to plants. Competition of metal ions for chelating agents gives rise to many nutrient interactions. Redox relationships also affets metal solubility relationships in soils. When combined these factors greatly affect iron availability to plants. Important nutrient relationships that modifity iron availability include interactions of iron with zinc, copper, manganese, phosphate, and nitrogen. Examples of these interactions are given to illustrate how the puzzle of iron deficiency is gradually being resolved. |
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Palavras-Chave: |
Deficiency; Iron chlorosis; Plant; Redox; Relacao; Relation. |
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Thesagro: |
Deficiência; Ferro; Planta; Solo. |
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Thesaurus Nal: |
chelation; soil; solubility. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01963naa a2200277 a 4500
001 1793824
005 1999-03-02
008 1984 bl --- 0-- u #d
100 1 $aLINDSAY, W. L.
245 $aSoil and plant relationships associated with iron deficiency with emphasis on nutrient interactions.
260 $c1984
520 $aThe major cause of iron deficiency in plants is the insolubility of Fe (III) oxides in soils. Minimum solubility occurs in the pH range of 7.4 to 8.5 where the dominant solution species Fe(OH)3 is present at approximately 10-10.4M. The critical level of soluble iron for plants is approximately 10-8M, so the ferric oxides are too insoluble to supply adequate iron to plants unless modifying factors intervene. Major factors that modifity iron solubility relationships insoils include oxidation-reduction processes and the presence of chelating agents. Reduction processes near respiring plant roots enable ferric chelates to dissociate and Fe3+ to reduce to Fe2+. It is necessary for Fe2+ to increase above the critical level to supply adequate iron to plants. Competition of metal ions for chelating agents gives rise to many nutrient interactions. Redox relationships also affets metal solubility relationships in soils. When combined these factors greatly affect iron availability to plants. Important nutrient relationships that modifity iron availability include interactions of iron with zinc, copper, manganese, phosphate, and nitrogen. Examples of these interactions are given to illustrate how the puzzle of iron deficiency is gradually being resolved.
650 $achelation
650 $asoil
650 $asolubility
650 $aDeficiência
650 $aFerro
650 $aPlanta
650 $aSolo
653 $aDeficiency
653 $aIron chlorosis
653 $aPlant
653 $aRedox
653 $aRelacao
653 $aRelation
773 $tJournal of Plant Nutrition$gv.7, n.1/5, p.489-500, 1984.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 1. |  | RIBEIRO, T. F. L.; OLIVEIRA, D. J. DE A.; COSTA, J. G. da; MARTINEZ GUTIERREZ, M. A.; OLIVEIRA, E. J. de; RIBEIRO JUNIOR, K. A. L.; GOULART, H. F.; RIFFEL, A.; SANTANA, A. E. G. Volatile organic compounds from cassava plants confer resistance to the Whitefly Aleurothrixus aepim (Goeldi, 1886). Insects, v. 14, n. 762, 2023. 14 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Algodão; Embrapa Alimentos e Territórios; Embrapa Mandioca e Fruticultura; Embrapa Solos / UEP-Recife; Embrapa Tabuleiros Costeiros. |
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