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Abstract:

Pesticides bring many problems to the environment and to human health. The first rationale for their use is increased food production. Glyphosate N-(phosphonomethyl)glycine (PMG) is a non-selective, post emergent, and broad spectrum herbicide, very well known for its extensive application in agriculture worldwide. PMG adsorption experiments were carried out in three horizons of a Typic Haplustoll soil from the Province of Santiago del Estero, Argentina. Adsorption isotherms were fitted using Freundlich and Langmuir models. The affinity constants (KF and KL), the adsorption intensity (1/n) and the maximum surface coverage (Gmax) were obtained. The results show the dependence of the parameters KL and Gmax with pH and also with the different horizons and particle size.

Registro:

Documento: Artículo
Título:pH dependence of Glyphosate adsorption on soil horizons
Autor:Tévez, H.R.; Afonso, M.S.
Filiación:Facultad de Ciencias Forestales, Universidad Nacional de Santiago del Estero, Avenida Belgrano Sur 1912, Santiago del Estero, 4200, Argentina
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Pabellón II, 3er Piso, Ciudad Autónoma de Buenos Aires, C1428EHA, Argentina
Palabras clave:Adsorption isotherm; Glyphosate; Horizon; Profile
Año:2015
Volumen:67
Número:3
Página de inicio:509
Página de fin:516
DOI: http://dx.doi.org/10.18268/BSGM2015v67n3a13
Título revista:Boletin de la Sociedad Geologica Mexicana
Título revista abreviado:Bol. Soc. Geol. Mex.
ISSN:14053322
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14053322_v67_n3_p509_Tevez

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Citas:

---------- APA ----------
Tévez, H.R. & Afonso, M.S. (2015) . pH dependence of Glyphosate adsorption on soil horizons. Boletin de la Sociedad Geologica Mexicana, 67(3), 509-516.
http://dx.doi.org/10.18268/BSGM2015v67n3a13
---------- CHICAGO ----------
Tévez, H.R., Afonso, M.S. "pH dependence of Glyphosate adsorption on soil horizons" . Boletin de la Sociedad Geologica Mexicana 67, no. 3 (2015) : 509-516.
http://dx.doi.org/10.18268/BSGM2015v67n3a13
---------- MLA ----------
Tévez, H.R., Afonso, M.S. "pH dependence of Glyphosate adsorption on soil horizons" . Boletin de la Sociedad Geologica Mexicana, vol. 67, no. 3, 2015, pp. 509-516.
http://dx.doi.org/10.18268/BSGM2015v67n3a13
---------- VANCOUVER ----------
Tévez, H.R., Afonso, M.S. pH dependence of Glyphosate adsorption on soil horizons. Bol. Soc. Geol. Mex. 2015;67(3):509-516.
http://dx.doi.org/10.18268/BSGM2015v67n3a13