Investigations on the Behaviour of Fenpropimorph and its Metabolite Fenpropimorphic Acid in Soils |
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| Authors: | Matthias Stockmaier Robert Kreuzig Müfit Bahadir |
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| Institution: | Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, 38106 Braunschweig, Germany |
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| Abstract: | The fate of fenpropimorph and its metabolite fenpropimorphic acid was investigated in a silty sand soil and in a clayey silt soil. In laboratory and field experiments fenpropimorph disappeared without a lag phase. A few days after application fenpropimorphic acid was detected. Additional laboratory experiments with 14C]fenpropimorph emphasized the significance of mineralization and the formation of non-extractable residues. The determination of soil/water distribution coefficients of parent compound and metabolite yielded a higher leaching potential for fenpropimorphic acid due to its higher polarity. This was confirmed by performing a laboratory column test under worst-case conditions. Under field conditions, however, fenpropimorphic acid was detected only in the superficial soil layers (0–5 cm) of both investigation sites at very low concentrations. |
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| Keywords: | fenpropimorph fenpropimorphic acid degradation leaching soil |
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