author(s)
Neelam Yadav and Neerja Agrawal

abstract
The present study was carried out on persuade of abiotic factors on abundance of cabbage aphid (Brevicoryne brassicae) and their predators on organic and Integrated Pest management (IPM) cabbage fields during rabi season of 2017-18 at Insectary, department of Entomology CSAUAT, Kanpur. The infestation of Brevicoryne brassicae first appeared in the 51^st standard week (0.3 per cent) in IPM field whereas in the organic field it commenced in 1^st standard week i.e. 1.34 per cent and increased gradually and reached its peak 67.00 per cent in the 9^th standard week. Predator Coccinella septumpunctata was most common during all the period of observation in both the fields. Moreover, weather may become more favourable for pests and sometimes for the predator to develop. Data calculated on correlation coefficient to estimate the relationship between the number of cabbage aphids and intensity of predators associated with weather parameters.