Table 7.2 Spraying dates, applied amount of each active substance and calculated initial concentrations Date of spraying Pond # Sprayed Substance Total sprayed mass (mg) Calculated initial concentration Co (µg/L) 090699 3 Ioxynil 113 1.40 090699 3 Bentazone 120 1.49 070999 4 Pendimethalin 100 1.48 070999 4 Fenpropimorph 100 1.48 090500 4 Glyphosate 857 9.64 050900 3 Pendimethalin1 100 2.15 050900 3 Fenpropimorph1 100 2.15 1: In this experiment, the pond was divided into two separate parts by a partition wall. In one part the macrophytes were removed while they were kept in the other part. 1: I dette forsøg blev vandhullet delt op i to adskilte dele med en skillevæg. I den ene halvdel blev vandplanterne fjernet, mens de blev bevaret i den anden.