The sap sucking aphids may cause great
damage directly by nutrient exhaust or indirectly by
more than a few mechanisms, including virus
transmission. Due to parthenogenetic reproduction
and short generation times, aphid population
increases rapidly (Hales et al., 1997) that can reach
the pest status. Management of aphids has been
done primarily by using chemical methods; however
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* Corresponding author: sfareed@bzu.edu.pk;
shbfkh@gmail.com
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Copyright 2013 Zoological Society of Pakistan
environmental and health problems have arisen due
to this practice