Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Akiha-ku, Niigata, Niigata 956-8603, Japan.
Bull Environ Contam Toxicol. 2012 Apr;88(4):521-5. doi: 10.1007/s00128-012-0531-0.
Behavior of the herbicide bromobutide, (RS)-2-bromo-N-(α,α-dimethylbenzyl)-3,3-dimethylbutyramide, in paddy water and soil after application to paddy fields was investigated to evaluate the degradation to bromobutide-debromo, N-(α,α-dimethylbenzyl)-3,3-dimethylbutyramide, and runoff of the herbicide. The respective maximum concentrations of bromobutide and the metabolite were 1,640–2,230 and 11.1–15.8 μg/L in the paddy water, and 2,210–4,140 μg/kg dry and 74–119 μg/kg dry in the paddy soil, respectively. The runoff ratios of the applied bromobutide from the paddy fields were calculated as 28 ± 16%. The respective mean values of the half-lives of bromobutide in the paddy water and the soil were 2.7 ± 0.34 days and 6.9 ± 2.6 days, respectively.
施用于稻田后，溴丁酰脲（（RS）-2-溴-N-（α，α-二甲基苄基）-3,3-二甲基丁酰胺）在稻田水中和土壤中的行为，以评估溴丁酰脲-脱溴、N-（α，α-二甲基苄基）-3,3-二甲基丁酰胺的降解和除草剂的径流。在稻田水中，溴丁酰脲和代谢物的最大浓度分别为 1,640-2,230 和 11.1-15.8 μg/L，在稻田土壤中，分别为 2,210-4,140 μg/kg 干重和 74-119 μg/kg 干重。从稻田流失的施用量溴丁酰脲的径流比计算为 28±16%。溴丁酰脲在稻田水中和土壤中的半衰期平均值分别为 2.7±0.34 天和 6.9±2.6 天。
