The field experiment was carried out during 2004–2006. The aim of the study was to determine the influence of insecticides (Actara 25 WG – 0.08 kg/ha, Regent 200 SC – 0.1 L/ha, Calypso 480 SC – three rates: 0.05; 0.075; 0.1 L/ha), used for controlling Colorado potato beetle, on total glycoalkaloid (TGA) content in potato leaves and tubers of three cultivars (Mors, Wiking, Żagiel). The insectici...