期刊
PLANTA DANINHA
卷 30, 期 3, 页码 633-640出版社
UNIV FEDERAL VICOSA
DOI: 10.1590/S0100-83582012000300020
关键词
herbicide; soil; batch equilibrium; liquid chromatography; Freundlich isotherms
Knowledge of herbicide retention processes in soil is fundamental to predict leaching potential, degradation, and weed control efficiency. The objective of this study was to evaluate the processes of sorption and desorption of ametryn in four Brazilian soils: Red-Yellow Latosol (LVA), Red-Yellow humic Latosol (LVAh), Red Latosol (LV), and Yellow Latosol (LA), with different pH values. Thus, the method Batch Equilibrium was applied under controlled laboratory conditions, and analysis by high performance liquid chromatography using UV-Vis detector at 245 nm. Considering the values of the modified Freundlich constant (K'f), the following increasing sorption order of ametryn was verified: LV pH 6.06 <5.00 LV pH <6.30 LA pH <6.11 pH LVA
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