1999 2000 Active substance 1st 2nd 3rd 4th 1st 2nd 3rd Time of calculation 24 122 82 131 34 877 82 Atrazine 0.2180 0.0326 0.0086 0.0299 0.0981 0.0022 BAM   (2.6- dichlorobenzamide) 0.0825 0.0501 0.0565 0.2455 0.7609 0.0447 Benazolin 0.0003 0.0013 Bentazone 0.0272 0.1022 0.0054 0.0094 0.0108 0.0422 0.0000 Bromoxynil 0.0308 0.0022 0.0198 Carbofuran Chloridazon 0.0022 0.0014 0.0092 Chlorsulfuron 1.0870 Cyanazine 0.0236 0.4217 0.0001 0.0921 Desethylatrazine 0.0414 0.0176 0.1428 0.0713 0.1231 0.0026 Desethylterbuthylazine 0.4238 0.1840 0.4380 0.1042 0.3773 0.0510 Desisopropylatrazine 0.0180 0.0196 0.0163 0.0369 0.0577 0.0030 Dicamba 0.0009 0.0026 0.0154 Dichlorprop 0.0044 0.0013 0.0019 0.0000 Dimethoate 0.0083 0.0224 Dinoseb 0.0025 Diuron 1.0000 0.0367 0.0076 0.0052 2.4716 0.0358 DNOC 0.0143 0.0093 0.0064 0.0230 0.1976 0.0355 Ethofumesate 0.0176 0.0027 0.0179 0.0608 Fenpropimorph 0.0277 0.0028 Flamprop Fluazifop 0.0300 0.0003 0.0239 Hexazinone 0.0551 0.1998 0.2345 0.0741 0.3029 0.0036 Hydroxyatrazine 0.0050 0.0356 0.1530 0.0487 0.0187 0.0058 Hydroxycarbofuran Hydroxysimazine 0.0896 0.0012 0.0017 Hydroxyterbuthylazine 0.2206 0.1269 0.6728 0.0653 0.4006 0.0972 Ioxynil 0.0444 0.0025 0.0046 Isoproturon 0.0048 0.0070 12.3925 0.3319 2.2893 0.0328 Lenacil 0.0005 0.1526 0.0033 Linuron 0.0071 0.0000 MCPA 0.4300 0.7111 0.0029 1.3352 0.0737 Mecoprop 0.0074 0.0053 0.0079 0.0017 0.0936 0.0004 Methabenzthiazuron Metamitron 0.0820 0.0170 0.0722 Metribuzin 0.0003 0.0001 Metsulfuron-methyl Nitrophenol 0.0598 0.0540 0.0301 0.1015 1.3724 0.0657 Pendimethalin 0.0110 0.0392 2.0180 0.0210 0.0721 0.0043 Pirimicarb 0.0029 0.0084 0.0004 0.0010 Prochloraz 0.0003 0.0004 Propiconazole 0.1452 0.0376 0.0018 0.0804 0.0072 Propyzamide 0.0010 0.0925 0.1527 Simazine 0.1102 0.4320 0.1058 0.0017 0.0456 0.0014 Terbuthylazine 3.5239 0.4115 0.8535 0.1228 5.0753 0.2174 Thifensulfuron Triadimenol 0.0003 0.0005 0.0009 Triasulfuron 2.4-D 0.0014 0.0034 2.4-dichlorphenol