Fig. 5. Formation of hydroxylated metabolites in the nutrient solutions per day (µmol L^–1 d^–1), where plants were exposed to 10 mg L^–1 of either atrazine, desethylatrazine (DEA), or desisopropylatrazine (DIA). Atrazine treatment: hydroxyatrazine (ATZOH); DEA treatment: hydroxydesethylatrazine (DEAOH); DIA treatment: hydroxydesisopropylatrazine (DIAOH).