| Section2 = | Section3 = }} Roundup is the brand name of a systemic, broad-spectrum herbicide produced by the U.S. company Monsanto and contains the active ingredient glyphosate. Glyphosate is the most used herbicide in the USA and is the most-sold agrichemical of all time. In the US, 5-8 million pounds are used every year on lawns and yards and 85-90 million pounds are used annually in US agriculture. and in 1990 received the Perkin Medal for Applied Chemistry. Biochemistry Glyphosate kills p… (More on Roundup)