Population dynamics of predatory phytoseiid mite, Neoseiulus longispinosus (Evans) on brinjal

The peak incidence of N. longispinosus was observed on brinjal during second fortnight of April 2018 i.e. during 17^th (2.375 active stages/leaf) and 18^th (2.318 active stages/leaf) standard meteorological week (SMW). The incidence of egg stage was found to range from 0.00 to 0.42 per leaf. Phytoseiid mite population showed a decreasing trend when temperature increased or decreased than 37.0 °C. Temperature range from 15.5 to 26.1°C (mid-October to end of February) was not found favourable for the development of N. longispinosus under natural conditions. The population of eggs and active stages of N. longispinosus was found to have a positive correlation with maximum temperature while it showed a negative correlation with minimum temperature. Anegative correlation of rainy days was also observed with the population of eggs and active stages of N. longispinosus