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| Registros recuperados : 3 | |
| 1. |  | MARQUES, A. P. S.; CAMARGO, R. C. R. de; MALAGODI-BRAGA, K. S.; ONO, E. O.; URCHEI, M. A. Avaliação do potencial melífero e polinífero de Crotalaria juncea L. e Crotalaria spectabilis Roth. (Fabaceae, Papilionoideae). Cadernos de Agroecologia, Cruz Alta, v. 8, n. 2, 2013. 4 p. Edição dos resumos do VIII Congresso Brasileiro de Agroecologia, Porto Alegre, 2013.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 3. | | CAMARGO, R. C. R. de; MARQUES, A. P. S.; CANUTO, J. C.; CORRALES, F. M.; QUEIROGA, J. L. de; RAMOS FILHO, L. O.; MALAGODI-BRAGA, K. S.; NEVES, M. C.; URCHEI, M. A.; MORICONI, W. Instalação e monitoramento de sistema agroflorestal planejado para integração com criação racional de abelhas. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 9., 2013. Ilheús. Anais... Ilhéus: SBSAF: IFBA, 2013. 4 p.| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 3 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
25/06/2003 |
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Data da última atualização: |
25/10/2018 |
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Autoria: |
KOGAN, M.; METZ, A.; ORTEGA, R. |
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Afiliação: |
MARCELO KOGAN, Pontificia Universidad Católica de Chile/Facultad de Agronomía e Ingeniería Florestal/Departamento de Ciencias Vegetales; ALEJANDRA METZ, Pontificia Universidad Católica de Chile/Facultad de Agronomía e Ingeniería Florestal/Departamento de Ciencias Vegetales; RODRIGO ORTEGA, Pontificia Universidad Católica de Chile/Facultad de Agronomía e Ingeniería Florestal/Departamento de Ciencias Vegetales. |
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Título: |
Adsorption of glyphosate in Chilean soils and its relationship with unoccupied phosphate binding sites. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 4, p. 513-519, abr. 2003 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Adsorção de glifosato em solos chilenos e sua relação com sítios de adsorção disponíveis para adsorção de fosfato. |
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Conteúdo: |
The objective of this work was to investigate glyphosate adsorption by soils and its relationship with unoccupied binding sites for phosphate adsorption. Soil samples of three Chilean soils series - Valdivia (Andisol), Clarillo (Inceptisol) and Chicureo (Vertisol) - were incubated with different herbicide concentrations. Glyphosate remaining in solution was determined by adjusting a HPLC method with a UV detector. Experimental maximum adsorption capacity were 15,000, 14,300 and 4,700 mg g-1 for Valdivia, Clarillo, and Chicureo soils, respectively. Linear, Freundlich, and Langmuir models were used to describe glyphosate adsorption. Isotherms describing glyphosate adsorption differed among soils. Maximum adjusted adsorption capacity with the Langmuir model was 231,884, 17,874 and 5,670 mg g-1 for Valdivia, Clarillo, and Chicureo soils, respectively. Glyphosate adsorption on the Valdivia soil showed a linear behavior at the range of concentrations used and none of the adjusted models became asymptotic. The high glyphosate adsorption capacity of the Valdivia soil was probably a result of its high exchangeable Al, extractable Fe, and alophan and imogolite clay type. Adsorption was very much related to phosphate dynamics in the Valdivia soil, which showed the larger unoccupied phosphate binding sites. However relationship between unoccupied phosphate binding sites and glyphosate adsorption in the other two soils (Clarillo and Chicureo) was not clear. |
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Palavras-Chave: |
dosage effects; efeito de dosagem; herbicide; modelos. |
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Thesagro: |
Herbicida. |
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Thesaurus NAL: |
models. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24573/1/v38n04_513.pdf
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Marc: |
LEADER 02255naa a2200229 a 4500
001 1108986
005 2018-10-25
008 2003 bl uuuu u00u1 u #d
100 1 $aKOGAN, M.
245 $aAdsorption of glyphosate in Chilean soils and its relationship with unoccupied phosphate binding sites.
260 $c2003
500 $aTítulo em português: Adsorção de glifosato em solos chilenos e sua relação com sítios de adsorção disponíveis para adsorção de fosfato.
520 $aThe objective of this work was to investigate glyphosate adsorption by soils and its relationship with unoccupied binding sites for phosphate adsorption. Soil samples of three Chilean soils series - Valdivia (Andisol), Clarillo (Inceptisol) and Chicureo (Vertisol) - were incubated with different herbicide concentrations. Glyphosate remaining in solution was determined by adjusting a HPLC method with a UV detector. Experimental maximum adsorption capacity were 15,000, 14,300 and 4,700 mg g-1 for Valdivia, Clarillo, and Chicureo soils, respectively. Linear, Freundlich, and Langmuir models were used to describe glyphosate adsorption. Isotherms describing glyphosate adsorption differed among soils. Maximum adjusted adsorption capacity with the Langmuir model was 231,884, 17,874 and 5,670 mg g-1 for Valdivia, Clarillo, and Chicureo soils, respectively. Glyphosate adsorption on the Valdivia soil showed a linear behavior at the range of concentrations used and none of the adjusted models became asymptotic. The high glyphosate adsorption capacity of the Valdivia soil was probably a result of its high exchangeable Al, extractable Fe, and alophan and imogolite clay type. Adsorption was very much related to phosphate dynamics in the Valdivia soil, which showed the larger unoccupied phosphate binding sites. However relationship between unoccupied phosphate binding sites and glyphosate adsorption in the other two soils (Clarillo and Chicureo) was not clear.
650 $amodels
650 $aHerbicida
653 $adosage effects
653 $aefeito de dosagem
653 $aherbicide
653 $amodelos
700 1 $aMETZ, A.
700 1 $aORTEGA, R.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 38, n. 4, p. 513-519, abr. 2003
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