Analysis of USDA data out of Washington State University shows that adoption of GMO crops in the U.S. resulted in a 527 million pound increase in herbicide use between 1996 and 2011.

In 2011 alone, GMO crops used 20 percent more pesticides on average than non-GMO crops.

sources: http://www.panna.org/gmos-pesticides-profit/big-ags-dirty-little-secret

https://enveurope.springeropen.com/articles/10.1186/2190-4715-24-24

More info on GMO’s