Pesticide leaching through sandy and loamy fields - long-term lessons learnt from the Danish Pesticide Leaching Assessment Programme

Environmental Pollution
Annette E RosenbomJeanne Kjær

Abstract

The European Union authorization procedure for pesticides includes an assessment of the leaching risk posed by pesticides and their degradation products (DP) with the aim of avoiding any unacceptable influence on groundwater. Twelve-year's results of the Danish Pesticide Leaching Assessment Programme reveal shortcomings to the procedure by having assessed leaching into groundwater of 43 pesticides applied in accordance with current regulations on agricultural fields, and 47 of their DP. Three types of leaching scenario were not fully captured by the procedure: long-term leaching of DP of pesticides applied on potato crops cultivated in sand, leaching of strongly sorbing pesticides after autumn application on loam, and leaching of various pesticides and their DP following early summer application on loam. Rapid preferential transport that bypasses the retardation of the plow layer primarily in autumn, but also during early summer, seems to dominate leaching in a number of those scenarios.

References

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Feb 13, 2008·Journal of Environmental Quality·Annette E RosenbomHannes Wydler
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Citations

May 10, 2016·The Science of the Total Environment·Anders L VendelboeAnnette E Rosenbom
Jun 23, 2016·Environmental Science and Pollution Research International·Marianne StenrødJaana Uusi-Kämppä
Nov 9, 2016·Environmental Pollution·Shizong WangKarolina M Nowak
Apr 7, 2018·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Lorena A LatiniRuth M Loewy
Jan 15, 2019·Journal of Environmental Quality·Christian Nyrop AlbersAnders Risbjerg Johnsen
Mar 24, 2020·Environmental Pollution·Islam Md MeftaulMallavarapu Megharaj
Sep 2, 2020·The Science of the Total Environment·Sandra WillkommenNicola Fohrer

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