Hi, I never use that glyphosate or other herbicides on crops. Though we once got a guy to come out and spray some brachiaria grass(it's a VERY invasive grass, nearly impossible to plow out) but the roots didn't die so end of that. the books were from the 1800s- early 1900s. I even have the soy intolerance with non-gmo, it's just not as intense.