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Adsorption of imazethapyr on six agricultural soils of Morocco: Evaluation of the impact of soil properties
- Source :
- Arabian Journal of Chemistry, Vol 10, Iss S2, Pp S2944-S2949 (2017)
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- Imazethapyr herbicide [5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl) nicotinic acid] is widely used on agricultural field crops in Morocco. It is reported that soil properties largely enhance the sorption of the herbicide in soils, however understanding their impact in soils of Morocco is needed. The present article investigates the sorption behavior of imazethapyr herbicide toward six agricultural soils from Morocco in batch equilibrium experiments at pH 5 and evaluates the effect of the organic matter, the clay content, and the cation exchange capacity (CEC) on the sorption by applying simple and multiple linear regressions. Freundlich isotherm model described well the dynamic of imazethapyr sorption in all studied soils under the experimental conditions. The linear regressions showed significant differences between the soil properties and their impact on the sorption. While simple regression revealed strong positive correlations between the sorption and both the soil clay content ( R 2 = 0.91) and CEC ( R 2 = 0.92), the multiple regression revealed a noteworthy influence of soil organic matter when combined with clays. Our findings showed a weak adsorption of imazethapyr on the selected Moroccan soils, in addition to a potential role of clay minerals and CEC in the retention of the herbicide compared to the organic matter. The low adsorptive capacity of the Moroccan soils urges the necessity of minimizing herbicide application rates in agricultural regions to prevent environmental detrimental impacts.
- Subjects :
- Chemistry(all)
Imazethapyr
General Chemical Engineering
010501 environmental sciences
01 natural sciences
Freundlich isotherm
lcsh:Chemistry
Adsorption
Moroccan soils
Cation-exchange capacity
Freundlich equation
Organic matter
CEC
GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
chemistry.chemical_classification
Chemistry
Soil organic matter
Sorption
04 agricultural and veterinary sciences
General Chemistry
Clay minerals
lcsh:QD1-999
Environmental chemistry
Soil water
040103 agronomy & agriculture
Chemical Engineering(all)
0401 agriculture, forestry, and fisheries
Subjects
Details
- ISSN :
- 18785352
- Database :
- OpenAIRE
- Journal :
- Arabian Journal of Chemistry
- Accession number :
- edsair.doi.dedup.....22a502ec35f1b4c10c16b73fa95dafe8
- Full Text :
- https://doi.org/10.1016/j.arabjc.2013.11.030