Different IGRs concentrations against maize stem borer (Chilo partellus Swinhoe) in field condition of Faisalabad-Pakistan

The experiment was conducted at the Youngwala experimental area of the Department of Agri.Entomology, University of Agriculture, Faisalabad in a Randomized Complete Block Design (RCBD), with 24 treatments excluding one control.The data for maize stem borer population was recorded after 3 days, 7 days and 14 days post IGRs application.The results obtained are concluded that all the insect growth regulators were equally effective against maize stem borer at different concentrations and on the numerical basis lowest stem borer population and its infestation was recorded in the pyriproxyfen® and priority® at 2x concentration and at concentration of field recommended concentration followed by other treatments concentrations.So, among the entire tested insect growth regulators pyriproxyfen® and priority® were the most effective IGRs against maize borer.Among the entire tested insect growth regulators viper® and sitara® were the least effective IGRs against maize borer.