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
Edgar Monsanto Queeny the founders of the company's research and development laboratory. Edgar M. Queeny Park in Town and Country, MO is named after him. Edgar Monsanto Queeny Edgar Monsanto Queeny (September 29, 1897 - July 7, 1968) was a US industrialist, chairman of the Monsanto corporation from 1928 until his retirement in 1960. Edgar Monsanto Queeny was the son of John Francis Queeny and his wife, Olga Méndez Monsanto. In the First World War, he served as a seaman in the US Navy. Edgar Monsanto Queeny took over the leadership of Monsanto, which had been founded by his father, in 1928. At