A.S. CHUNDAWAT AND O.P. AMETA

A field experiment was conducted at Rajasthan College of Agriculture farm, Udaipur, during kharif 2010 to investigate the incidence of sucking insect pests of okra. The incidence of aphid, Aphis gossypii (Glover) was initiated in the second week of August, while, jassid, Amrasca biguttula biguttula (Ishida) and whitefly, Bemisia tabaci (Gennadius) commenced in fourth week of July. Aphid, jassid and whitefly touched the peak during fourth week of August (86.5 aphids/ten plants), first week of October (15.4 Jassids/ten plants) and first week of September (6.9 whiteflies/ten plants), respectively. The aphid and whitely exhibited a positive correlation with temperature, relative humidity and negative correlation with total rainfall; however, the correlation was non–significant. The correlation between jassid population and temperature, relative humidity and rainfall was significantly negative.