SEASONAL INCIDENCE AND MANAGEMENT OF AMRASCA BIGUTTULA , BIGUTTULA ISHIDA AND EPILACHNA VIGINTIOCTOPUNCTATA FABR. OF BRINJAL Bipin Kumar*, I. B. Singh, Shyam Kumar Verma 1 and Munendra Pal 2 Department of Agricultural Entomology, T.D.P.G. College, Jaunpur - 221 002, (Uttar Pradesh), India. 1 Department of Entomology, C.S. Azad University of Agriculture & Technology, Kanpur-208 002 (Uttar Pradesh), India. 2 Department of Soil conservation, C.C.S. (P.G) College Heonra, Etawah - 200 602 (Uttar Pradesh), India. Abstract A field trial was conducted to study the incidence and management of Amrasca biguttula bigultula and Epilachna vigintioctopunctata. The incidence of Amrasca higuttula biguttula on brinjal commenced from 6 th week after sowing i.e. 3 rd week of August (34 th standard week) with an average population level of 0.11 jassid/leaf during 1 st year and in 2 nd year, it started from third week of August (34 th standard week) with an average population level 0.11 jassid/leaf. Maximum population was observed during third week of October (43 rd standard week). The jassid incidence showed positive correlation with maximum temperature and sunshine hrs. The incidence of Epilachna vigintioctopunctata started in the 3 rd week of August (34 th standard week) and reached peak in second and third week of September (37 , 38 th standard week) during both the years respectively. The hadda beetle incidence showed significant positive correlation with maximum and minimum temperature, minimum relative humidity, rainfall and evaporation. The result indicated that B.t. Nimbecidine - endosulfan - Trichogramma, Nimbecidine - endosulfan - Trichogramma and Nimbecidine - endosulfan module were highly effective in reducing the population of A. biguttula biguttula. The module Nimbecidine - endosulfan - Trichogramma, Nimbecidine - endosulfan and endosulfan - Trichogramma were most effective in reducing the population E. vigintioctopunctata on brinjal besides recording higher fruit yield. Key words : Amrasca biguttula biguttula, Epilachna vigintioctopunctata, seasonal incidence, Solanum melongena. Plant Archives Vol. 14 No. 2, 2014 pp. 1151-1154 ISSN 0972-5210 Introduction Brinjal (Solanum melongena Linn.) is one of the most important solanaceous vegetable crop grown all over the country. It is infested by large number of insect pests including jassid ( Amrasca biguttula biguttula Ishida), Hadda beetle ( Epilachna vigintioctopunctata Fabr.), white fly (Bemisia tabaci Gennaus ) and shoot and fruit borer ( Leucinodes orbonalis Guene), which cause 70-92% loss in the fruit yield. The present day emphasizes not only the use of different groups of chemicals that are eco friendly and give satisfactory control but also knowledge on the population dynamics influenced by biotic and abiotic factors. Study on the seasonal incidence of insect pests throughout the crop period in relation to biotic and abiotic factors provided basic information on population dynamics of insect pests of rainy brinjal crop. Hence, this study was undertaken. Materials and Methods The study was conducted at Agriculture Research Farm, T.D.P.G. College, Jaunpur (U.P.), India; during Kharif season, 2009 and 2010 on variety 'Azad B-1' 30 days old age seedlings was transplanted in a bulk plot of 14 × 4 m. The incidence of jassid, Amrasca biguttula biguttula and hadda beetle, Epilachna vigintioctopunctata was recorded at weekly intervals from five plants in each replication taking three leaves i.e. one each from upper, middle and lower part of each selected plants by adopting the techniques given by Singh and Kovadia (1989). The pest incidence was correlated with meteorological data for establishing the effect of biotic and abiotic factors on the activity of A. biguttula biguttula and E. vigintioctopunctata. Management trial *Author for correspondence: E-mail: v_vkyadav@rediffrnail.com