M. KUMAWAT, U. S. SHARMA, O. P. AMETA AND GOPI CHAND

A field experiment on the incidence of insect pest of chilli was conducted at the Instructional Farm, R.C.A., Udaipur during kharif, 2012 (July to November). Thrips ( Scirtothrips dorsalis Hood), aphids ( Aphis gossypii Glover), whitefly (Bemisia tabaci Genn.), jassids ( Amrasca biguttula biguttula Ishida.), and fruit borer (Helicoverpa armigera Hubner) were recorded on chilli. The incidence of aphid initiated during 31 SMW and continued up to the 46 SMW; thereafter, disappeared during 47 SMW. The infestation of whiteflies, thrips, jassids and fruit borer initiated during 29 , 30 , 32 and 33 SMW, respectively. the pest populations reached the peak at different  periods during the season, thrips (15.30/plant) were the maximum in 40 SMW; aphids (11.93/plant) in 35 SMW; whitefly (7.30/plant) in 38 SMW; jassids (12.67/plant) and fruit borer (30.6%) during 41 SMW. The aphid showed significant and positive correlation with mean atmospheric temperature and mean relative humidity. Whitefly exhibited significant positive correlation with mean relative humidity. The thrips exhibited significant negative correlation with mean relative humidity.