The current situation with glyphosate is that it is now ubiquitous and we’ve been sold a pup. The theory was that glyphosate works on a certain channel in plant physiology, the shikimate pathway, and as animals don’t have this pathway, glyphosate couldn’t affect animals that is humans, insects and invertebrates. The reality though is very different.
Yet because of this sales pitch by Monsanto originally and then other glyphosate producers once it came off patent, means that glyphosate (Roundup) is everywhere. People drank the Kool-Aid. Now farmers will only use x amount of glyphosate because they’re running a business and they have costs to keep under control. The use of GMO corn and soybean and BT cotton and that sort of thing that works in conjunction with glyphosate has a certain level of use built into the system and because of the way it’s setup there’s enough glyphosate used to keep the crop safe but not destroy the income of the farmers. After all, parasites (Monsanto) never want to destroy their hosts (farmers).