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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
29/05/2002 |
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Data da última atualização: |
29/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; CLARK, R. B. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF. |
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Título: |
Micronutrients in crop production. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Advances in Agronomy, v. 77, p. 185-268, 2002. |
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DOI: |
https://doi.org/10.1016/S0065-2113(02)77015-6 |
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Idioma: |
Inglês |
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Conteúdo: |
The essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of this article are to report advances in research on the micronutrient availability and requirements for crops, in correcting deficiencies and toxicities in soils and plants, and in increasing the ability of plants to acquire needed amounts of micronutrient elements. MenosThe essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of t... Mostrar Tudo |
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Thesagro: |
Deficiência; Matéria Orgânica; Planta; Solo. |
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Thesaurus Nal: |
Nutrient deficiencies; Organic matter; Plant micronutrients; Soil. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02457naa a2200253 a 4500
001 1209894
005 2022-04-29
008 2002 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/S0065-2113(02)77015-6$2DOI
100 1 $aFAGERIA, N. K.
245 $aMicronutrients in crop production.$h[electronic resource]
260 $c2002
520 $aThe essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of this article are to report advances in research on the micronutrient availability and requirements for crops, in correcting deficiencies and toxicities in soils and plants, and in increasing the ability of plants to acquire needed amounts of micronutrient elements.
650 $aNutrient deficiencies
650 $aOrganic matter
650 $aPlant micronutrients
650 $aSoil
650 $aDeficiência
650 $aMatéria Orgânica
650 $aPlanta
650 $aSolo
700 1 $aBALIGAR, V. C.
700 1 $aCLARK, R. B.
773 $tAdvances in Agronomy$gv. 77, p. 185-268, 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Classificação |
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Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
21/12/2015 |
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Data da última atualização: |
21/12/2015 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GOUVEIA, S. E. M.; PESSENDA, L. C. R.; ARAVENA, R.; LEDRU, M. P.; SIFEDDINE, A.; RICARDI-BRANCO, F.; CORDEIRO, R. C.; MENOR, E. A.; SAIA, S. E. M. G.; OLIVEIRA, S. M. B.; BENDASSOLLI, J. A.; RIBEIRO, A. S.; FREITAS, A. M. M.; BOULET, R.; FILIZOLA, H. F. |
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Afiliação: |
S. E. M. GOUVEIA, CENA/ESALQ-USP; L. C. R. PESSENDA, CENA/ESALQ-USP; R. ARAVENA, University of Waterloo, Canada; M. P. LEDRU, IRD, Montpelier, France; A. SIFEDDINE, IRD, Bondy, France; F. RICARDI-BRANCO, IG/UNICAMP; R. C. CORDEIRO, UFF; E. A. MENOR, UFP; S. E. M. G. SAIA, CENA/ESALQ-USP; S. M. B. OLIVEIRA, IG/USP; J. A. BENDASSOLLI, CENA/ESALQ-USP; A. S. RIBEIRO, UFS; A. M. M. FREITAS, URP; R. BOULET, IG/USP; HELOISA FERREIRA FILIZOLA, CNPMA. |
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Título: |
Vegetation and climate changes in the northeastern region of Brazil during late pleistocene and holocene. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: INTERNATIONAL RADIOCARBON CONFERENCE, 19., 2006, Oxford, Inglaterra. Abstracts & programme. Oxford, Inglaterra: University of Oxford, 2006. p. 263-264. |
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Idioma: |
Inglês |
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Thesagro: |
Clima; Vegetação. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/135964/1/2006RA-106.pdf
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Marc: |
LEADER 00975nam a2200289 a 4500
001 2032126
005 2015-12-21
008 2006 bl uuuu u00u1 u #d
100 1 $aGOUVEIA, S. E. M.
245 $aVegetation and climate changes in the northeastern region of Brazil during late pleistocene and holocene.$h[electronic resource]
260 $aIn: INTERNATIONAL RADIOCARBON CONFERENCE, 19., 2006, Oxford, Inglaterra. Abstracts & programme. Oxford, Inglaterra: University of Oxford, 2006. p. 263-264.$c2006
650 $aClima
650 $aVegetação
700 1 $aPESSENDA, L. C. R.
700 1 $aARAVENA, R.
700 1 $aLEDRU, M. P.
700 1 $aSIFEDDINE, A.
700 1 $aRICARDI-BRANCO, F.
700 1 $aCORDEIRO, R. C.
700 1 $aMENOR, E. A.
700 1 $aSAIA, S. E. M. G.
700 1 $aOLIVEIRA, S. M. B.
700 1 $aBENDASSOLLI, J. A.
700 1 $aRIBEIRO, A. S.
700 1 $aFREITAS, A. M. M.
700 1 $aBOULET, R.
700 1 $aFILIZOLA, H. F.
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