An analytical method for simultaneously determining the residues of difenoconazole and propiconazole
in wheat straw, wheat grain and soil was developed. Mean recoveries and relative standard deviations in
all samples ranged 86.2–101.3% and 3.1–12.1% for propiconazole and difenoconazole. The half-lives of
difenoconazole and propiconazole were 3.6–5.5 days and 5.1–6.9 days in wheat straws, and 4.9–5.8 days
and 6.1–8.4 days in soil, respectively. The residues in wheat grain were found to be