Research Article
Relative Resistance among 22 Brassica napus Cultivars against Turnip Aphid, Lipaphis erysimi Kalt
Department of Entomology, University of Arid Agriculture, Rawalpindi, Pakistan
Humayun Javed
Department of Entomology, University of Arid Agriculture, Rawalpindi, Pakistan
S.A. Kakakhel
PODB Research Unit, National Agricultural Research Centre (NARC), Islamabad, Pakistan