Under aerobic conditions, trifloxystrobin was very rapidly degraded, with a half-life shorter than a day in any tested soil. The mineralisation to CO2 was wide spread and reached from around 5% to around 65%. Eight metabolites were identified of which four, namely CGA 321113 (EE), NOA 413161 (ZE), CGA 357276 (E) and CO2, were accounted as major metabolites. These major metabolites degraded with different half-lives further. CGA 321113 (EE) degraded only very poorly, with a half-life between 50 and 750 days. NOA 413161 degraded moderately, with a half-life between 30 and 90 days. CGA 357276 degraded moderately further with a half-between 20 and 80 days. Other metabolites, namely NOA 413163, NOA 409480, CGA 357261 and CGA 373466, had as well quit different half-lives. The half-lives were between shorter than 5 hours (CGA 357261) and up to 80 days (NOA 413163).