The study on “Incidence and Management of Cotton whitefly, Bemisia tabaci Under High Density Planting System (HDPS)” was conducted at RARS, Lam, Guntur during kharif, 2016-17 to observe the incidence of whitefly under HDPS and to determine the efficacy of flonicamid 50% WG, diafenthiuron 50% WP, acephate 75% SP, monocrotophos 36% SL, fipronil 5% SC, buprofezin 25% SC and imidacloprid SL under HDPS. There is no significant difference was observed in the incidence of whiteflies in both normal and HDPS. Among the tested insecticides diafenthiuron 50% WP @ was found effective in reducing whitefly population in normal spacing as well as high density planting system. Followed by flonicamid 50% WG @ and acephate 75% SP @ was found effective against whitefly. | Incidence and management of cotton whitefly Bemisia tabaci under high density planting system HDPS