The metabolic pathway of Atonik in soil under aerobic conditions was similar in all soils : 14C-Atonik was rapidly degraded to carbon dioxide. The maximum amount of 14CO2 evolved from soils I (20°C/ 10°C) to IV accounted for up to 54.9% / 49.1%, 60.8%, 58.8% and 61.5% of the applied radioactivity, respectively, within 120 days of incubation. Ortho-nitrophenol (o-NP) was detected in the ethylene glycol amounting to a maximum of 10.3% in soil II. Besides 14CO2, two unknown radioactive fractions were detected. None of the radioactive fractions exceeded an amount of 3.1% of the applied radioactivity. The non-extractable radioactivity reached a maximum of 54.2% (day 2), 54.6% (day 7, 10°C), 40.8% (day 14), 50.1% (day 2), 38.7 (day 2) in soils I-IV, respectively. The non-extractable radioactivity decreased in all soils until day 120 by further mineralisation to carbon dioxide. The results showed that 14C-atonik was rapidly degraded via a series of minor metabolites mainly to 14CO2. Incorporation of its residues into the organic matter of the soils played also an important role. However the incorporated residues were further mineralised to carbon dioxide with time.