The present studies were carried out under protected cultivation at CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur. Single spray of three insecticides viz., imidacloprid (), indoxacarb () and lambda-cyhalothrin () was given on tomato crop. The residues of imidacloprid and indoxacarb were worked out on tomato fruits during winter season 2015 whereas lambda-cyhalothrin residues were worked out during summer season 2016. Tomato fruit samples were collected at 0, 1, 3, 5, 7 and 10 days after application of insecticides. The residues were analyzed using High Performance Liquid Chromatography. | Persistence of imidacloprid indoxacarb and lambda-cyhalothrin on tomato Solanum lycopersicum L. under protected cultivationPersistence of imidacloprid indoxacarb and lambda-cyhalothrin on tomato Solanum lycopersicum L. under protected cultivation