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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
21/07/1993 |
Data da última atualização: |
28/09/2004 |
Autoria: |
HARADA, A.; GARCIA, A.; SILVEIRA, J. M.; BENI, O. A.; ROCHA, A.; BEGO, A. |
Afiliação: |
Do 2o. autor: EMBRAPA-CNPSo. Londrina, PR. |
Título: |
Ensaios intermediarios em semeadura antecipada. |
Ano de publicação: |
1988 |
Fonte/Imprenta: |
In: OCEPAR. Programa de Pesquisa (Cascavel, PR). Resultados de pesquisa na safra de verao 1986/87. Cascavel, 1988. |
Páginas: |
p.44-45. |
Série: |
(OCEPAR. Resultados de Pesquisa, 1). |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Competicao; Competition; Cultivar; Parana; Soybean; Variety. |
Thesagro: |
Linhagem; Soja. |
Thesaurus Nal: |
Brazil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00824naa a2200313 a 4500 001 1452955 005 2004-09-28 008 1988 bl uuuu u00u1 u #d 100 1 $aHARADA, A. 245 $aEnsaios intermediarios em semeadura antecipada. 260 $c1988 300 $ap.44-45. 490 $a(OCEPAR. Resultados de Pesquisa, 1). 650 $aBrazil 650 $aLinhagem 650 $aSoja 653 $aBrasil 653 $aCompeticao 653 $aCompetition 653 $aCultivar 653 $aParana 653 $aSoybean 653 $aVariety 700 1 $aGARCIA, A. 700 1 $aSILVEIRA, J. M. 700 1 $aBENI, O. A. 700 1 $aROCHA, A. 700 1 $aBEGO, A. 773 $tIn: OCEPAR. Programa de Pesquisa (Cascavel, PR). Resultados de pesquisa na safra de verao 1986/87. Cascavel, 1988.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Rondônia; Embrapa Roraima. |
Data corrente: |
17/03/2022 |
Data da última atualização: |
04/07/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SILVA JÚNIOR, E. C. da; WADT, L. H. de O.; SILVA, K. E. da; LIMA, R. M. B. de; BATISTA, K. D.; GUEDES, M. C.; OLIVEIRA JUNIOR, R. C. de; REIS, A. R. dos; LOPES, G.; BROADLEY, M. R.; YOUNG, S. D.; GUILHERME, L. R. G. |
Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO; KATIA EMIDIO DA SILVA, CPAA; KARINE DIAS BATISTA, CPAF-RR; MARCELINO CARNEIRO GUEDES, CPAF-AP; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU. |
Título: |
Geochemistry of selenium, barium, and iodine in representative soils of the Brazilian Amazon rainforest. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Science of The Total Environment, v. 828, 154426, July 2022. |
DOI: |
https://doi.org/10.1016/j.scitotenv.2022.154426 |
Idioma: |
Inglês |
Conteúdo: |
The Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−1) surpassed the worldwide mean. Notwithstanding, the close relationship found between the total content of the elements (Se, Ba, and I) and soil texture (clay, silt, and sand) suggests their geogenic source. Finally, our data regarding SeTot, BaTot, and ITot can be used to derive regional quality reference values for Amazon soils and also for updating prevention (PV) and investigation (IV) values established for selected elements by the Brazilian legislation. MenosThe Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−... Mostrar Tudo |
Palavras-Chave: |
Amazon soils; Availability; Geogenic; Quality reference values; Total concentration. |
Thesagro: |
Solo. |
Thesaurus NAL: |
Trace elements. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232614/1/1-s2.0-S0048969722015194-main.pdf
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Marc: |
LEADER 03024naa a2200349 a 4500 001 2140996 005 2022-07-04 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.scitotenv.2022.154426$2DOI 100 1 $aSILVA JÚNIOR, E. C. da 245 $aGeochemistry of selenium, barium, and iodine in representative soils of the Brazilian Amazon rainforest.$h[electronic resource] 260 $c2022 520 $aThe Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−1) surpassed the worldwide mean. Notwithstanding, the close relationship found between the total content of the elements (Se, Ba, and I) and soil texture (clay, silt, and sand) suggests their geogenic source. Finally, our data regarding SeTot, BaTot, and ITot can be used to derive regional quality reference values for Amazon soils and also for updating prevention (PV) and investigation (IV) values established for selected elements by the Brazilian legislation. 650 $aTrace elements 650 $aSolo 653 $aAmazon soils 653 $aAvailability 653 $aGeogenic 653 $aQuality reference values 653 $aTotal concentration 700 1 $aWADT, L. H. de O. 700 1 $aSILVA, K. E. da 700 1 $aLIMA, R. M. B. de 700 1 $aBATISTA, K. D. 700 1 $aGUEDES, M. C. 700 1 $aOLIVEIRA JUNIOR, R. C. de 700 1 $aREIS, A. R. dos 700 1 $aLOPES, G. 700 1 $aBROADLEY, M. R. 700 1 $aYOUNG, S. D. 700 1 $aGUILHERME, L. R. G. 773 $tScience of The Total Environment$gv. 828, 154426, July 2022.
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