In 'Management of insect pests in brinjal' investigations were carried out to study population dynamics of major insect pests of brinjal and their correlation with weather parameters, assessment of losses due to major insect pests, performance of Bt and NBt brinjal hybrids during kharif 2007- 2008 and 2008-209, biology and life fecundity tables of L. orbonalis under laboratory condition for three generations during 2008-2009 and validation of IPM modules with economics and CB ratio during 2008-2009 and 2009-2010 The studies revealed predominance of aphids, whiteflies and brinjal shoot and fruit borer with significant and negative correlation with weather parameters. The major insect pests i.e. sucking pests and BSFB caused yield loss of 59.01 per cent. Brinjal shoot and fruit borer L. orbonalis occupied average life cycle of 34.45 days and exhibited rm of 0.106 female/female/day in three generations. All NBt, brinjal hybrids did not show significant variation in incidence of sucking pests. Fruit infestation recorded on number and weight basis was significantly lower in Bt brinjal hybrids.

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