Dissipation and persistence of flubendiamide and thiacloprid in/on tomato and soil

Flubendiamide, a phthalic acid diamide protects the plants against a broad range of economically important lepidopterus pests and thiacloprid a second generation neonicotinoid is effective against the sucking insects, white flies and jassids. To estimate the residues of flubendiamide and thiacloprid on tomato, analytical methods were validated by conducting recovery studies, residues were quantified by using HPLC on C(18) column and PDA at 260 λ. Residues of flubendiamide declined below detectable level of 0.01 mg kg(-1) after 5 and 7 days of application at lower and higher dose with RL(50) of 0.72 and 1.32 days, respectively. Thiacloprid residues reached below its detectable level of 0.01 mg kg(-1) after 5 and 7 days of its lower and higher dose with RL(50) of 0.83 and 1.79 days, respectively.