Pesticides in streams and subsurface drainage water within two arable catchments in Denmark: Pesticide application, concentration, transport and fate

Table ii. Detection frequencies for 12 pesticides at the 3 stream stations and 3 drain stations in the two studied catchments during the two study years. Tabel ii.   Fundhyppighed for 12 pesticider ved de 3 vandløbsstationer og de 3 drænstationer i de to oplande gennem de to måleår. Pesticide Upstream Lillebæk Downstream Lillebæk Odderbæk Drain 2 Lillebæk Drain 6 Lillebæk Drain Odderbæk Stream stations Drain stations Herbicides BAM (metabolite) 75% 70% 12% 3.6% 0% 14% Bentazone 62% 87% 69% 57% 67% 61% Ethofumesate 24% 1.0% 1.8% 0% 0% 2.0% Ioxynil 17% 7.3% 2.9% 7.1% 0% 0% Isoproturon 76% 84% 56% 54% 46% 47% Pendimethalin 34% 26% 25% 0% 13% 12% Terbuthylazine 97% 87% 32% 7.1% 21% 6.1% Fungicides Fenpropimorph 20% 4.8% 1.8% 0% 0% 2.9% Prochloraz 3.5% 3.1% 1.5% 0% 0% 4.1% Propiconazole 55% 18% 5.9% 7.1% 4.2% 6.1% Insecticides Dimethoate 12% 3.1% 1.5% 0% 0% 0% Pirimicarb 12% 9.4% 2.9% 0% 0% 0%