A roving survey in maize growing mandals in Krishna and Guntur districts during kharif 2017-18, kharif 2018-19 to record the incidence and damage per cent of Chilo partellus (swinhoe) in the farmer fields. In Krishna district, the maximum leaf infestation was observed in Musunuru mandal in 2017-18 () and 2018-19 () and lowest infestation is recorded in Veerullapadu mandal in 2017-18 () and 2018-19 (). In Guntur district, the maximum leaf infestation was observed in Pedanandipadu mandal in 2017-18 () and 2018-19 () and lowest infestation is recorded in Narsaraopet mandal and in 2017-18 () and 2018-19 (). However, overall mean infestation was high in Guntur district in kharif 2017-18 (), 2018-19 () than in Krishna district in kharif 2017-18 () and 2018-19 ().The per cent dead hearts, stem tunneling, no of larvae, no of pupae and exit holes also followed the same trend. | Survey on the incidence of Chilo partellus (Swinhoe) in Krishna and Guntur districts of Andhra pradesh, India
