Department of Crop Science and Production, Botswana College of Agriculture, Private Bag, 0027, Gaborone, Botswana
*Corresponding author's E-mail: mobopile@gmail.com, mobopile@bca.bw
Online published on 1 August, 2013.
The results showed that age specific fecundity and survival rates of aphid were significantly lower on Ethiopian mustard, while intrinsic rates of natural increase and mean relative growth did not differ significantly among brassica cultivars but numerically lower on both kale and rape. A significant delay in pre-reproductive period was observed on rape variety compared to other brassicas. The differences in relative susceptibility among cultivars as confirmed by variation in life table parameters suggest that the choice of a suitable cultivar in brassica cropping systems may play an important role in management B. brassicae.
Brevicoryne brassicae L, life tables, Survival Fecundity, Brassica
