The maximum residue limit of Procymidone in leek was adjusted in China

 Since May 11, 2023, the "Maximum residue Limit of 112 pesticides, including 2, 4-D, Sodium butyrate, in Food under the National Standard for Food Safety" (GB 2763.1-2022) standard has been officially implemented, and the maximum residue limit of Procymidone in leeks has been adjusted from the current 0.2 mg/kg to 5 mg/kg. It is expected that the problem of excessive residue of Procymidone in leek is likely to be fundamentally solved.

Gray mold can occur in the production of leek all over the world, especially in the production of small arch sheds, greenhouses and greenhouses. In addition, gray mold can continue to harm leek during storage and transportation. For a long time, only Procymidone has been registered for the prevention and treatment of gray mold of leek in China. (Pyrimethanil in 2020, Fludioxonil in 2022).

Due to the long-term continuous use of a single component of Procymidone, the resistance of grey mold to it was widespread and serious, and the control effect decreased significantly. Farmers have to increase the dosage and frequency of drug application, which further aggravates the problem of pathogen resistance, forming a vicious circle. In addition, according to research, even according to the current normal registered dose use and safe intervals of harvesting, it is very easy to occur residues exceeding the standard. Experts have repeatedly suggested that the maximum residue limit standard of Procymidone in leek should be reevaluated to make it more in line with scientific laws and agricultural production practice.

 Here to remind the local agricultural and rural, market supervision and law enforcement agencies and agricultural products (food) quality testing agencies, pay attention to the effective connection of the new and old standards, to avoid disputes and even lawsuits caused by the error of the applicable standards.