Comprehensive assessment and policy implications of pesticide packaging waste management in China

The improper disposal of pesticide packaging wastes (PPWs) poses serious ecological risks. As one of the world's largest pesticide users, China established its first national regulatory framework for PPWs management with the promulgation in 2020. Against this background, this study utilized large-scale data from pesticide registration, packaging production, and field collection to systematically evaluate the generation, recycling, and disposal of PPWs across China. Experimental analysis verified that triple rinsing effectively removes residues from typical pesticide formulations, allowing properly cleaned containers to be exempted from hazardous waste control. Building on these results, the study proposes policy pathways to improve PPWs management, including standardized rinsing protocols, extended producer responsibility-based collection incentives, and the integration of QR code traceability to guide and monitor container returns. The findings provide quantitative evidence and actionable recommendations to strengthen national recycling systems and offer a reference for developing countries facing similar challenges.