Cotton hybrids, created by crossing the Bt gene into traditional varieties, have been developed by local firms dealing with seeds.[4] In Sindh province cotton is grown in more than one million acres in the districts of Benazirabad, Hyderabad, Jamshoro, Mirpur Khas, Naushero Feroz, Sanghar, Badin, Sukkar, Ghotki, Tharparkar, Thatta and Umar Kot.[5]