Fig. 8. Concentrations of (A) bromide, (B) bentazon, and (C) imidacloprid in drain water for both drain sets (closed symbols for Set 1 and open symbols for Set 2) as a function of time as measured at the experimental field. Time zero is 0000 h on 7 Apr. 1998 (i.e.. the application date of bromide and bentazon; imidacloprid was applied on Day 50). Note that vertical axes have different ranges and that in (B) the vertical axis has a break.