Monsanto introduced proprietary GMO crops that were resistant to Roundup so you could easily wipe out every plant that wasn’t the crop (aka “weeds”). It was a package deal.
> In 1996, Monsanto introduced the Roundup Ready soybean, a genetically engineered crop resistant to glyphosate. In the few years after, Roundup Ready cotton, maize, and various other crops also made their debut.
> In 1996, Monsanto introduced the Roundup Ready soybean, a genetically engineered crop resistant to glyphosate. In the few years after, Roundup Ready cotton, maize, and various other crops also made their debut.
https://sitn.hms.harvard.edu/flash/2015/roundup-ready-crops/