Abstract
With the widespread use of mesotrione, its residues have become increasingly serious and caused a series of environmental problems in northern China. To reduce the harm of these residues, we investigated the degradation effect of mesotrione in typical soils in northern China at different temperatures, soil moisture, pH values and initial concentrations. We also examined the influence of soil type, microorganisms and the use of organic matter and biogas slurry as soil amendments. Mesotrione degradation rates increased as the temperature, soil moisture, soil pH and the content of biogas slurry increased; and decreased as the organic content and the initial concentration of mesotrione increased. The degradation rates were different in the three soils. Microorganisms played an important role in the degradation process. These result may offer a theoretical basis for decreasing mesotrione residue when using this product in northern China.
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