Vol. 9, Issue 7, Part H (2025)

The environmental half-lives of pesticides are investigated in order to determine the amount of pesticide accumulation and environmental pollution. However, for the majority of active compounds, these data are often lacking. To address this, we examined experimental data on the half-lives of fipronil and mealtaxyl in sandy loam soil in GCMS. According to the dissipation kinetics data, metalaxyl concentrations declined significantly over a period of 50 days, but fipronil concentrations declined gradually. Fipronil's and metalaxyl's experimental DT50 values are 84 and 65 days, respectively. Factors such as soil type, temperature, and time that impact the half-life of metalaxyl and fipronil.