Subsurface tile drainage loss of modern pesticides: field experiment results.

作者: B. Kronvang , H.L. Strøm , C.C. Hoffmann , A. Laubel , N. Friberg

DOI: 10.2166/WST.2004.0181

关键词: Tile drainageMCPAHydrologyPirimicarbPesticidePropiconazoleDrainageAnimal scienceDimethoateFenpropimorphChemistry

摘要: The concentration and loss of two herbicides (bentazone MCPA), fungicides (fenpropimorph propiconazole) insecticides (dimethoate pirimicarb) were measured in tile drainage water from a 2,813 m2 experimental grass field May to August 2001. Three different pesticides applied the subsequently rainfall 10 mm was simulated during first experiment 16 second experiment. Bromide as conservative tracer bromide suspended sediment also water. In experiment, maximum concentrations bentazone, fenpropimorph dimethoate 5.8 microg l(-1), 0.33 l(-1) 2.29 respectively. for MCPA, propiconazole pirimicarb 3.6 0.065 2.3 loss:applied ratio highest bentazone (0.088%) declined order (0.057%), (0.050%), (0.0031%) (0.00042%). Exposure macroinvertebrate species Gammarus pulex (exposure time: 7 hours) showed significant mortality/inactivity compared an upstream downstream control.

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