Studies were conducted to find out settling response and bionomics of canola aphid, Brevicoryne brassicae on five different canola varieties viz. Atlex-161, Bulbul, Rainbow-161, Shiralee and Takwara-161 and five lines viz. DN-1, DN-3, DN-4, DN-5 and DN-6 at constant laboratory conditions and to find out the potential of predator, Chrysoperla carnea against B. brassicae infesting canola crop under field conditions. The results indicated that DN-5 and DN-6 were least attracted whereas; DN-1 and Altex-161 were found as the most attracted varieties and lines for B. brassicae. The shortest developmental duration of nymphal instars was found on DN-1 and Altex-161. The pre reproductive period was significantly longest (1.50 days) on DN-3 and shortest (0.66 days) on Bulbul. The reproductive period was maximum (18.51 and 18.34 days) on DN-1 and Bulbul with no-significant difference. The minimum reproductive period of 8.76 days was recorded on DN-5. Total progeny produced by the aphids during the life time was highest (34) when fed on DN-1, followed by Altex-161 with 30.71 nymphs. Aphids reared on DN-6 were unable to reproduce. Maximum infestation of aphids was recorded in control plot (36.87) whereas, minimum infestation was found in T₄ (17.22) where maximum number of C. carnea egg cards were installed. Similarly, maximum number of C. carnea was also recovered from T₄. The use of resistant varieties and predator, C. carnea is recommended for the timely and safer management of canola aphid.