author(s)
Meghana H, SB Jagginavar and ND Sunitha

abstract
The present investigation was conducted to study the population dynamics of sucking insect pest complex on intra-specific and inter-specific Bt cotton hybrids at college of Agriculture, Vijayapur. The results revealed that the maximum population of thrips was noticed during the 36^th standard meteorological week (107.60 and 121.43 thrips/3 leaves) and aphids load was highest during 44^th SMW (94.20 and 102.17 aphids/3 leaves). Whereas, maximum population of jassids (5.20 and 9.33 jassids/3 leaves) and whiteflies (4.27 and 5.13/3 leaves) were recorded at 41^st SMW. Mirid bugs were peaked (3.28 and 3.32 bugs/5 squares) during 44^th SMW on ACH-155 BG II (Intra-specific) and MRC-7918 BG II (Inter-specific) Bt cotton hybrids, respectively. Correlation with weather parameters like maximum and minimum temperature was positively correlated with thrips, aphids, jassids and whiteflies. Whereas, rainfall had negative correlation. Mirid bugs were positively correlated with maximum temperature and negatively correlated with minimum temperature, relative humidity and rainfall.