pH dependence of Glyphosate adsorption on soil horizons
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 (K F and K L), the adsorption intensity (1/n) and the maximum surface coverage (Γmax) were obtained. The results show the dependence of the parameters K L and Γmaxwith pH and also with the different horizons and particle size.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedad Geológica Mexicana A.C.
2015
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-33222015000300013 |
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