Thiamethoxam25 % WG is a second neonicotinoid with highly systemic and broad spectrum insecticide used against sucking pests of vegetables in India. Thiamethoxam residues were quantified through regular sampling till the residues are below determination level (BDL) of mg kg−1 following the validated QuEChERS method. The qualitative and quantitative analysis of thiamethoxam was performed on LC- MS/MS(PDA). | Dissipation studies of thiamethoxam on capsicum under field and poly house conditions