Studies on population dynamics of natural enemies (Lady Bird beetle & predatory stink bug) in brinjal

Abstract

The present investigations carried out during kharif 2022, on the farm of college of agriculture, Badnapur, tal- Badnapur, dist-Jalna, department of Agricultural Entomology, College of Agriculture, Badnapur, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani with the objectives of study the population dynamics of major insect pests of brinjal, The experiment was laid out in non-replicated 100 m sq. area. The ladybird beetle and predatory stink bug was observed from 32th SMW whereas attack of white fly and aphid started from 34th SMW. The population of ladybird beetle and predatory bug varied from (0.2 to2.3 LBB/3 leaves) and (0.3 to 2.6 PSB/3leaves), respectively. Dynamics of ladybird beetle and predatory stink bug and their correlation with weather parameters revealed that lady bird beetle and predatory stink bug had positive significant correlation with relative humidity at morning.