Monsanto Monsanto The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation that existed from 1901 until 2018 when it was acquired by Bayer. It was headquartered in Creve Coeur, Missouri. Monsanto developed Roundup, a glyphosate-based herbicide in the 1970s, and became a major producer of genetically engineered crops. Monsanto was one of four groups to introduce genes into plants (1983), and was among the first to conduct field trials of genetically modified crops, (1987). It was one of the top 10 U.S. chemical companies until it divested most of its chemical businesses between 1997 and 2002, through a
Monsanto Eli Lilly and Company. In 1996, Monsanto purchased Agracetus, the biotechnology company that had generated the first transgenic cotton, soybeans, peanuts and other crops, and from which Monsanto had been licensing technology since 1991. Monsanto first entered the maize seed business when it purchased 40% of Dekalb in 1996; it purchased the remainder of the corporation in 1998. In 1997, the company first published an annual report citing Monsanto's Law, a biotechnological take on Moore's Law, indicating its future directions and exponential growth in the use of biotechnology. In 1998, Monsanto purchased Cargill's international seed business, which gave it access