title: Dynamic characteristics of the novel strobilurin fungicide SYP-3343 in aerobic soils.
abstract: SYP-3343, (E)-2-(2-((3-(4-chlorophenyl)-1-methyl-1H-pyrazole-5-yloxy)methyl)phenyl)-3-methoxyacrylate, is a newly developed strobilurin fungicide. However, the environmental behavior and fate of SYP-3343 in soil have not been well-documented. In this study, ¹⁴C-labeled SYP-3343 was employed to investigate the dynamic characteristics in three typical soils under aerobic conditions. Radioactivity analysis after high-performance liquid chromatography (HPLC) showed that SYP-3343 degraded rapidly in the coastal soil with a half-life of 43.8 days. After incubation of 100 days, its extractable residues were greater than 76.0% and bound residues were less than 12.4%, indicating that SYP-3343 was not easy to accumulate in soils. The mineralization to ¹⁴CO₂ reached 5.4% for acidic soil, 2.8% for neutral soil, and 1.7% for alkaline soil, suggesting that it was difficult to cleave the pyrazole ring completely. In addition, dynamic characteristics of SYP-3343 in sterile and non-sterile loamy soil showed that soil microbes affected SYP-3343 residue in soil and could accelerate the process of degradation and mineralization.
authors.affiliation: Institute of Nuclear Agricultural Sciences and Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China.
authors.forename: Xun-Yue
authors.initials: XY
authors.lastname: Liu
authors.forename: Xia
authors.initials: X
authors.lastname: Chen
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Wang
authors.forename: Ti-long
authors.initials: TL
authors.lastname: Yang
authors.forename: Qing-Fu
authors.initials: QF
authors.lastname: Ye
authors.forename: Xing-Cheng
authors.initials: XC
authors.lastname: Ding
mesh_terms: D000332:Aerobiosis; D005659:Fungicides, Industrial / Q000737:chemistry*; D007700:Kinetics; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D005659:Fungicides, Industrial; D012987:Soil; D012989:Soil Pollutants