Abstract
A experiment was conducted at Entomological Research Farm, Department of Entomology, College of Agriculture, Central Agricultural University, Imphal. Total eleven insect pest species were found to infest the crop viz. Large cabbage white butterfly, Pieris brassicae; Asian cabbage white butterfly, Pieris canidia; mustard aphid, Lipaphis erysymi and striped flea beetle, Phyllotreta striolata were observed frequently while, Cabbage aphid, Brevicoryne brassicae; green peach aphid, Myzus persicae; crucifer flea beetle, Phyllotreta cruciferae; mustard sawfly, Athalia lugens proxima; cabbage semilooper, Trichoplusia ni; fungus beetle, Monolepta signata and tobacco grasshopper, Atractomorpha crenulata were observed rarely.
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