Microwave oven assisted extract was prepared from banana pseudostem and tested its kairomonal activities on O. longicollis using Electroantennogram technique. In addition, the results were tested with two other methods such as Solvent extraction and Air-entrainment extraction for comparison of its activities. It was found that the Micro oven assisted extract elicited the maximum EAG response in female, whereas, Solvent extract was found higher antennal activity in male only and the Air-entrainment extract elicited poor response both in male and female O. longicollis.