Potential Biocontrol Agents of Lipaphis Erysimi (Kalt.) in Cruciferous Crops of Manipur

The study revealed that on cauliflower, 3 species of Coccinellid, 3 species of Syrphid, 1 species of Hemerobiid and 1 species of Aphidiid parasitoid were recorded. Further, in cabbage, 3 Coccinellid species, 5 Syrphid species, and 3 Aphidiid parasitoid species were observed whereas 3 species of Coccinellid, 7 species of Syrphid and 1 species of Aphidiid parasitoid were found to occur along with the population of L. erysimi in rapeseed. Their respective biocontrol efficiency according to the density and voracity was also evaluated. Coccinella septempunctata and Diartiella rapae were suggested to be more efficient predator and parasitoid species of Lipaphis erysimi than the other species on three cruciferous crops in Manipur.