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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/06/2017 |
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Data da última atualização: |
27/06/2017 |
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Autoria: |
GIANELLO, C.; AMORIM, M. B. |
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Afiliação: |
Clesio Gianello, UFRGS; MAGNO B. AMORIM, UFRGS. |
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Título: |
Ammonium chloride solution as an alternative laboratory procedure for exchangeable cations in Southern Brazilian soils. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 46, p. 94-103, 2015. |
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DOI: |
http://dx.doi.org/10.1080/00103624.2014.988580 |
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Idioma: |
Português |
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Conteúdo: |
Abstract: Most Brazilian soil-testing laboratories use Mehlich 1 and 1.0 M potassium chloride (KCl) solutions as extractants for the determination of phosphorus (P), potassium (K), and sodium (Na) and for exchangeable calcium (Ca), magnesium (Mg), manganese (Mn), and aluminum (Al) in agricultural soil samples. Other laboratories use a combination of exchangeable ionic resin and KCl procedures. With recent adoption of the inductively coupled plasma (ICP-OES) in routine soil-testing laboratories, soil extraction with 1.0 M ammonium chloride (NH4Cl) became an alternative due to the possibility of determining all exchangeable elements in one run (Ca, Mg, K, Mn, Na, and Al), leaving determination of phosphorus (P) with Mehlich 1 or exchangeable ionic resin. To evaluate the performance of the NH4Cl solution, an experiment was carried out with thirty-seven samples of soils representative of the southernmost state of Brazil, Rio Grande do Sul. Four extraction solutions [Mehlich 1 at soil/solution ratio of 1:10 and 1.0 M ammonium acetate (NH4OAc), 1.0 M KCl, and 1.0 M NH4Cl at soil/solution ratio 1:20] were used with three different shaking times (5, 30, and 60 min). Correlation coefficients among all methods were high. Mehlich 1 did not perform well against NH4OAc and NH4Cl, despite the high correlation coefficients, with values consistently lower for K, even when the time of extraction was increased from 5 to 30 or 60 min. However, for concentrations less than 0.30 cmol kg−1 (i.e., in the range of K deficiency), both solutions performed similarly. Calcium and Mg increased with time of shaking. Comparable values of exchangeable Ca, Mg, and K, as well as of Al and Mn, were obtained with 1.0 M NH4Cl with 60 min shaking and the standard procedures of 1.0 M NH4OAc and 1.0 M KCl. The determination of Al by traditional titration/back-titration of the 1.0 M KCl solution gave slightly greater results compared to ICP-OES obtained using extraction with 1.0 M NH4Cl. The results indicate that for Ca, Mg, Mn, and Al, it is possible to replace the traditional 1.0 M KCl extraction with 1.0 M NH4Cl solution, with 60 min shaking time and a soil/solution ratio of 1:20. MenosAbstract: Most Brazilian soil-testing laboratories use Mehlich 1 and 1.0 M potassium chloride (KCl) solutions as extractants for the determination of phosphorus (P), potassium (K), and sodium (Na) and for exchangeable calcium (Ca), magnesium (Mg), manganese (Mn), and aluminum (Al) in agricultural soil samples. Other laboratories use a combination of exchangeable ionic resin and KCl procedures. With recent adoption of the inductively coupled plasma (ICP-OES) in routine soil-testing laboratories, soil extraction with 1.0 M ammonium chloride (NH4Cl) became an alternative due to the possibility of determining all exchangeable elements in one run (Ca, Mg, K, Mn, Na, and Al), leaving determination of phosphorus (P) with Mehlich 1 or exchangeable ionic resin. To evaluate the performance of the NH4Cl solution, an experiment was carried out with thirty-seven samples of soils representative of the southernmost state of Brazil, Rio Grande do Sul. Four extraction solutions [Mehlich 1 at soil/solution ratio of 1:10 and 1.0 M ammonium acetate (NH4OAc), 1.0 M KCl, and 1.0 M NH4Cl at soil/solution ratio 1:20] were used with three different shaking times (5, 30, and 60 min). Correlation coefficients among all methods were high. Mehlich 1 did not perform well against NH4OAc and NH4Cl, despite the high correlation coefficients, with values consistently lower for K, even when the time of extraction was increased from 5 to 30 or 60 min. However, for concentrations less than 0.30 cmol kg−1 ... Mostrar Tudo |
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Palavras-Chave: |
Análise de solo; Brasil; Laboratório de solo; Mehlich 1; Rio Grande do Sul; Solução de extração. |
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Thesagro: |
Cloreto de Potássio. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02954naa a2200229 a 4500
001 2071593
005 2017-06-27
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1080/00103624.2014.988580$2DOI
100 1 $aGIANELLO, C.
245 $aAmmonium chloride solution as an alternative laboratory procedure for exchangeable cations in Southern Brazilian soils.$h[electronic resource]
260 $c2015
520 $aAbstract: Most Brazilian soil-testing laboratories use Mehlich 1 and 1.0 M potassium chloride (KCl) solutions as extractants for the determination of phosphorus (P), potassium (K), and sodium (Na) and for exchangeable calcium (Ca), magnesium (Mg), manganese (Mn), and aluminum (Al) in agricultural soil samples. Other laboratories use a combination of exchangeable ionic resin and KCl procedures. With recent adoption of the inductively coupled plasma (ICP-OES) in routine soil-testing laboratories, soil extraction with 1.0 M ammonium chloride (NH4Cl) became an alternative due to the possibility of determining all exchangeable elements in one run (Ca, Mg, K, Mn, Na, and Al), leaving determination of phosphorus (P) with Mehlich 1 or exchangeable ionic resin. To evaluate the performance of the NH4Cl solution, an experiment was carried out with thirty-seven samples of soils representative of the southernmost state of Brazil, Rio Grande do Sul. Four extraction solutions [Mehlich 1 at soil/solution ratio of 1:10 and 1.0 M ammonium acetate (NH4OAc), 1.0 M KCl, and 1.0 M NH4Cl at soil/solution ratio 1:20] were used with three different shaking times (5, 30, and 60 min). Correlation coefficients among all methods were high. Mehlich 1 did not perform well against NH4OAc and NH4Cl, despite the high correlation coefficients, with values consistently lower for K, even when the time of extraction was increased from 5 to 30 or 60 min. However, for concentrations less than 0.30 cmol kg−1 (i.e., in the range of K deficiency), both solutions performed similarly. Calcium and Mg increased with time of shaking. Comparable values of exchangeable Ca, Mg, and K, as well as of Al and Mn, were obtained with 1.0 M NH4Cl with 60 min shaking and the standard procedures of 1.0 M NH4OAc and 1.0 M KCl. The determination of Al by traditional titration/back-titration of the 1.0 M KCl solution gave slightly greater results compared to ICP-OES obtained using extraction with 1.0 M NH4Cl. The results indicate that for Ca, Mg, Mn, and Al, it is possible to replace the traditional 1.0 M KCl extraction with 1.0 M NH4Cl solution, with 60 min shaking time and a soil/solution ratio of 1:20.
650 $aCloreto de Potássio
653 $aAnálise de solo
653 $aBrasil
653 $aLaboratório de solo
653 $aMehlich 1
653 $aRio Grande do Sul
653 $aSolução de extração
700 1 $aAMORIM, M. B.
773 $tCommunications in Soil Science and Plant Analysis$gv. 46, p. 94-103, 2015.
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| 9. |  | CUNHA, R.; PRADO, M. A.; ANDRADE, A. C. S. Efeito do armazenamento sobre a viabilidade de sementes desidratadas de Copaifera langsdorffi Desf. E. Eriotheca pubescens Schott et Endl. In: SEMINARIO PANAMERICANO DE SEMILLAS, 15., WORKSHOP SOBRE MARKETING EM SEMENTES E MUDAS, 3., 1996, Gramado, RS. Anais. [S.l.]: CESM-RS; Federacion Latinoamericana de Asociaciones de Semillas, 1996. p.68 p.68| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 10. | | FERREIRA, G. C.; CORDEIRO, I. M. C. C.; MOURÃO JUNIOR, M.; ANDRADE, A. C. S. Composição florística de espécies oportunistas em agroecossistema de paricá e curauá. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
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| 11. | | RAMOS, F. N.; ANDRADE, A. C. S.; LOUREIRO, M. B.; BASTOS, R. N.; SOUZA, D. O. Determinacao do teor de umidade em sementes florestais: estabelecimento de metodologias. Informativo ABRATES, Brasilia, v.5, n.2, p.184, 1995. p.184 Resumo| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 12. | | ANDRADE, A. C. S.; CUNHA, R.; REIS, R. B.; ALMEIDA, K. J. Quebra de dormencia em sementes de mutamba (Guazuma ulmifolia L.). In: SEMINARIO PANAMERICANO DE SEMILLAS, 15., WORKSHOP SOBRE MARKETING EM SEMENTES E MUDAS, 3., 1996, Gramado, Rs. Anais. [S.l]: CESM-RS, Federacion Latinoamericana de Asociaciones de Semillas, 1996. p.57. p.57| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 13. | | ANDRADE, A. C. S. de; LOUREIRO, M. B.; SOUZA, A. D. de O.; RAMOS, F. N. Quebra de dormência de sementes de sucupira-preta. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 5, p. 465-469, maio 1997. Título em inglês: Dormancy break in bowdichia virgilioides seeds.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 15. | | FAIAD, M. G. R.; URBEN, A. F.; PADILHA, L. S.; ANDRADE, A. C. S.; SANTOS, M. F. Efeito de temperatura na detecção fungica e germinação de sementes de Mauritia flexuosa L.F. (Buriti). Fitopatologia Brasileira, Brasilia, v.21, p.389, 1996, Suplemento. Apresentado no 29º Congresso Brasileiro de Fitopatologia.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 16. | | SOUZA, A. F.; SOUSA, A. D. O.; ANDRADE, A. C. S.; LOUREIRO, M. B.; PEREIRA, T. S. Germinacao e desenvolvimento pos-seminal de genipa americana. Informativo ABRATES, Brasilia, v.5., n.2, p.195, 1995. Resumo| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 17. | | ANDRADE, A. C. S.; CUNHA, R. da; FAIAD, M. G. R.; MAURY NETO, L.; SOUZA, A. F. de. Germinacao, morfologia da semente e do desenvolvimento pos-seminal e deteccao de fungos associados as sementes de Eugenia dysenterica DC. In: CONGRESSO NACIONAL DE BOTANICA, 47., 1996, Nova Friburgo, RJ. Resumos. Nova Friburgo: Sociedade Brasileira de Botanica, 1996. p.464-465. p.464-465 Resumo.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 18. | | ANDRADE, A. C. S. de; SOUZA, A. F. de; RAMOS, F. N.; PEREIRA, T. S.; CRUZ, A. P. M. Germinação de sementes de jenipapo: temperatura, substrato e morfologia do desenvolvimento pós-seminal. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 3, p. 609-615, mar. 2000. Título em inglês: Seed germination of Genipa americana l. - rubiaceae: temperature, substrate and post-seminal development.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 19. | | SILVEIRA, F. A. O.; TEIXIDO, A. L.; ZANETTI, M.; PADUA, J. G.; ANDRADE, A. C. S. de; COSTA, M. L. N. da. Ex situ conservation of threatened plants in Brazil: a strategic plan to achieve Target 8 of the Global Strategy for Plant Conservation. Rodriguésia, v. 69, n. 4, p. 1547-1555, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 20. | | LEMOS, A. J.; MORAIS, J. A. da S.; SOUZA, S. F. de; OLIVEIRA, V. S.; ANDRADE, A. C. S.; SANTOS, A. C. P. dos. Consumo, comportamento ingestivo, desempenho, características de carcaça e rendimento de cortes comerciais de cordeiros em terminação alimentados com feno ou silagem de gliricídia. Archives of Veterinary Science, v. 25, n. 2, p. 94-110, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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