Degradation of Terbutol in Soils from Turfgrass and Drainage Basins on Golf Courses

• Published in: Journal of agricultural and food chemistry Vol. 44; no. 6; pp. 1599 - 1602
• Main Authors: Suzuki, Toshinari, Yaguchi, Kumiko, Nishima, Taichiro, Suga, Tetsuya
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 18.06.1996
• Subjects: Agronomy. Soil science and plant productions; Applied sciences; ASULAM; ASULAME; Biological and medical sciences; Biological and physicochemical phenomena; Biological and physicochemical properties of pollutants. Interaction in the soil; CESPED; Chemical control; DEGRADACION; DEGRADATION; DRAINAGE; DRENAJE; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; GAZON; HERBICIDAS; HERBICIDE; METABOLITE; METABOLITOS; Natural water pollution; OXIGENO; OXYGENE; Parasitic plants. Weeds; Phytopathology. Animal pests. Plant and forest protection; Pollution; SIMAZINA; SIMAZINE; Soil and sediments pollution; Soil and water pollution; Soil science; SOL ANTHROPOGENE; SUELOS ANTROPOGENICOS; TRAITEMENT THERMIQUE; TRATAMIENTO TERMICO; Water treatment and pollution; Weeds; Asia; Honshu; Japan; Soil chemistry; Agricultural chemical product; Sports ground; Pesticide fate; Urban area; Soil pollution; Herbicide; Degradation; Persistence; Organic chemistry; Soils; Turf; Watershed; Environment; Water pollution; Carbamate; Chemical weed control; Phytopharmacology; Golf course
• ISSN: 0021-8561; 1520-5118
• DOI: 10.1021/jf950550u

Degradation of terbutol (2,6-di-tert-butyl-4-methylphenyl N-methylcarbamate) in soils from turfgrass (Zoisia japonica) and drainage basins on golf courses was investigated. Terbutol was decomposed in soils from turfgrass by 50% after 180 days, whereas decomposition in soils from drainage basins was 50% after 360 days. In soils autoclaved at 120 °C for 20 min or with reduced oxygen supplement, the rates of terbutol degradation decreased markedly. Degradation of terbutol results in the oxidation of the 4-methyl group, N-demethylation, and hydrolysis of the carbamate ester linkage. The major degradation products were 4-COOH-, NH2-, and 4-COOH-NH2-terbutol, BHT, and 4-COOH-BHT. Only trace amounts of oxidative intermediates of the 4-methyl group of terbutol and BHT were detected. Keywords: Terbutol; 2,6-di-tert-butyl-4-methylphenyl N-methylcarbamate; soil; degradation