Screening of rapeseed-mustard varieties against mustard aphid (Lipaphis erysimi)

An examination was carried out to study the screening of rapeseed-mustard varieties Brassica spp. and evaluation of novel insecticides against aphid, Lipaphis erysimi (Kalt.) in randomized block design with three replications at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut during Rabi 2014-15. The aimed of screening to find out most tolerant variety against mustard aphid Lipaphis erysimi under field condition. The screening was done based on the parameters of aphid infestation index and aphid population count. The result revealed that differential reaction among varieties ranged from highly susceptible to highly tolerant. Among the twenty varieties tested, Pusa Jagnath and RLM-619 possessed highly tolerant and susceptible to mustard aphid.