Study on the Residue Behavior of Pygmatocin and Its Metabolites on Lily
The aim is to study the safe use of humic acid and its metabolite 3,5-dichloroaniline in lily plants,and to determine the residual behavior of humic acid and its metabolite 3,5-dichloroaniline.The degradation dynamics of humic acid and its metabolites in lily plants and the final residue test in lily bulbs were conducted.Method:Acetonitrile extraction,GC-MS analysis of the residual amounts of Pygmatocin and its metabolites in Lily.Result:The half-life of the degradation of humic acid in lily plants was 21.29 d,and the half-life of 3,5-dichloroaniline in lily plants was 33.55 d.The residual degradation of both on lily plants followed the first-order reaction kinetics equation.Conclusion:This method is simple and fast,and can simultaneously determine Pygmatocin and its metabolites.The above results can provide certain reference value for the safe,reasonable,and efficient use of chlorothalonil in the future.
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