Dissipation Dynamics and Risk Assessment of Thiacloprid 240 SC in Jasmine (Jasminum sambac L.) Buds

Thiacloprid effectively managed budworm, Hendecasis duplifascialis Hampson and blossom midge, Contarinia maculipennis Felt infesting jasmine buds. At the recommended dose of 0.6 mL L⁻¹ on the jasmine flower buds, the residues persisted up to 5 d, being below detectable level on the 7^th d at the limit of quantification (LOQ) of 0.01 mg kg⁻¹. The half-life was 1.04 d. Based on the maximum residual limit (MRL) on lettuce, herbs, and baby leaf brassica (2.0 mg kg⁻¹), the safe waiting period for plucking the flowers for usage in concrete preparation or for production of jasmine tea was 0.40 d (∼ 10 h).