Parasitic Potential of Bracon brevicornis Wesmael (Hymenoptera: Braconidae) on Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Maize is one of the most important cereal crops and called ‘the queen cereals’ because its high yielding potential than other cereals. Fall armyworm, Spodoptera frugiperda serious invasive pests found to cause higher yield loss extensive damage on maize. Considering ecological environmental consequences, biological control insect gaining importance as an alternative insecticides. However, success any programme depends appropriate parasitoid: host ratio stage pest susceptible parasitoid. To fortify above facts, present study was aimed determine parasitic B. brevicornis S. through free no choice tests. This indicated highest parasitization at 5:1 with 68.60 64.95 per cent VI instar followed by V (57.75 56.95 %), IV (48.80 46.60 %) III (32.40 30.67 respectively under conditions, respectively. Among parasitoid ratios tested 5: 1 be best indicating that directly proportional densities. Biological parameters studied different instars recorded number eggs (32.00), grub (30.75), cocoon (29.75) adults (28.00) sixth larva fifth frugiperda. The results revealed larval size progeny development brevicornis. egg, period ranged from 24.20 26.20 h, 72.26 73.20 96.20 98.20 total life cycle completed in 192.66 195.80 h all par studied. longevity emerged were each it 362.0 362.8 h.