In this regard, a recent and important example is the
introduction of Bt-cotton in Pakistan and India. Farmers
have adopted Bt-cotton promptly as it gives higher yield due
to its resistance to chewing insects, especially bollworms.
Other advantages include no or fewer sprays required to
control insects. Hence, a large area of the Pakistani cotton
belt has been under introduced transgenic Bt-cotton and
indigenous non-Bt cotton is being replaced by the farmers.
As a result the area under Bt-cotton is increasing every
year in the cotton belt of Punjab province in Pakistan
(Multan, Vehari, Bahawalpur, Toba Tek Singh, Jhang, and
Faisalabad districts) and 70% of wheat growing and 28% of
sugarcane growing farmers are interested in shifting from
non-BT to BT-cotton (Sabir et al., 2011).