author(s)
Ravikumar Havanoor and CM Rafee

abstract
The investigation was carried out at Dharwad during kharif 2017. The population of thrips, mites and aphids were recorded during study. Thrips activity commenced in fourth week of July, aphids activity started in second week of August, while, mites incidence commenced during first week of August. The peak activity of thrips was registered during last week of August (4.20/leaf) whereas, mites was reached peak during September third week (3.72/leaf). Further, aphids reached peak (2.48/leaf) during October last week. Thrips shown significant positive correlation with maximum temperature and non-significant negative correlation with rainfall, minimum temperature, maximum relative humidity and minimum relative humidity. Mites exhibited negative correlation with maximum temperature while, the correlation was positive with minimum temperature, rainfall, minimum relative humidity and positively significant with maximum relative humidity. Whereas, none of the weather parameters showed significant impact on aphid population.