Chinese onions imported to South Korea under the tariff-rate quota have been found to contain four times the permitted level of thiamethoxam, a pesticide ingredient, according to the Ministry of Food and Drug Safety’s Imported Food Information Center. This excess has sparked concerns among South Korean onion producer groups, who fear that other imported onions may also exceed the residue standard. The National Onion Producers Association is pushing for a thorough investigation into the compliance of imported agricultural products with South Korea’s pesticide residue standards, highlighting the need for enforcement of the Pesticide Residue List Management System (PLS).