Roundup is the brand name of a herbicide produced by Monsanto that contains the active ingredient glyphosate. Glyphosate is the most used herbicide in the USA, and Roundup has been the number one selling herbicide worldwide since at least 1980. Several weed species, known as superweeds, have developed Roundup resistance largely because of repeated exposure.
Monsanto also produces seeds which grow into plants genetically engineered to be tolerant to glyphosate, which are known as Roundup Ready crops. The genes contained in these seeds are patented. Soy was the first Roundup Ready crop, and was produced at Monsanto’s Agracetus Campus located in Middleton, Wisconsin in 1996. As of 2005, 87% of U.S. soybean fields were planted with glyphosate resistant varieties. The Roundup Ready line of seeds has grown to include corn, canola, cotton, and other crops. The latest iteration is Roundup Ready Corn 2.
The Daily Omnivore 
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