science report pest-resident crop

The article I read on science&technology is science report pest-resident crop.Scientists think that it might be a effective way to control the pests to maximize the products if the crop is genetically modified wit BT.BT is a kind of insectiside which can reduce pests more efficiently,and it was tested to be non-toxic to human and nature,cause it's can be degraded rapidly.In the past,scientists applied it on cotton cultivation against the cotton bollworm,which is the one of most destructive bateria threatening the global agriculture.The modefied cotton with BT was turned out to be very effective to dramatically reduce cotton bollworm.So, they predict that it's might be practicable to transfer BT into crop so that farmers can get much crop pruducts and benefit the agriculture as well.