EFFICACY OF NATURAL ENEMIES AGAINST PIERIS BRASSICAE UNDER FIELD CONDITIONS OF CAULIFLOWER

Abstract

In the present study, four primary parasitoids and two hyper parasitoids were collected during 2012-2014 from cauliflower genotypes under field conditions. There were two larval parasitoids (Cotesia glomerata and Diadegma pierisae), two pupal parasitoids (Brachymeria lasus and Pteromalus puparium) and two hyper parasitoids (Brachymeria lasus and Tetrastichus galactopus) collected from field grown cauliflower. Efficacy of C. glomerata ranged from 0.48 to 29.03%, D. pierisae from 2.63 to 18.6%, B. lasus from 0 to 26.08% and of P. puparium from 10 to 82.7% during 1st year. During the 2nd year of study efficacy of D. pierisae was 2.24 - 27.02%, but it was hyper parasitized by B. lasus (0 - 17%) and by T. galactopus (0 - 3%). Efficacy of P. puparium rnaged from 0 to 81.81%.