Monsanto is something of a growth stalk in helping farmers grow corn and other crops. The company applies its biotechnology and genomics know-how to develop seeds and herbicides to help farmers produce corn (43% of revenue), cotton, oilseeds, and vegetables. It produces genetically altered seeds that tolerate Roundup (its flagship product and the world's #1 herbicide) and resist bugs. The company also produces Asgrow, DEKALB, Deltapine, and Seminis seeds. About 60% of sales are in the US. Monsanto agreed to be bought by  Bayer in a landmark $66 billion deal reached in September 2016.