Dissipation of Thiacloprid on Tomato (Lycopersicon esculantum Mill.)

The persistence of thiacloprid was studied on the tomato fruit in a two-year trial. Thiacloprid (Calypso 240 SC) @ 48 and 96 g ai ha⁻¹ was sprayed separately on okra and tomato at 50% fruiting stage with a fluid rate of 500 L ha⁻¹. Initial residues of thiacloprid ranged 0.76–1.38 mg kg⁻¹. Thiacloprid residues dissipated at faster rate during the initial days compared to later period. However, residues were short lived and attained the below detectable level by around 10^th day.