Daryl, there are several grasses and weeds that are only mildly affected by glyphosate. Most still are totally susceptible to it, however (thankfully). I see millions of grasshoppers here each late spring, and farm in a system that relies heavily on glyphosate. Minimum-till and no-till farming requires that the existing vegetation, whether cover crops or natural weed cover, be killed at or prior to planting. I invariably see the largest numbers of grasshoppers where winter weeds have been killed with glyphosate, prior to planting corn, beans or cotton. Glyphosate is the herbicide of choice to do that, with paraquat being a close second. (The use of minimum till and no till has been proven to be much more beneficial to game birds than systems requiring extensive tillage [plowing]).The two herbicides work in entirely different ways. The point I wanted to make is that glyphosate will not kill grasshoppers or any other insect that I am aware of. Grasshoppers need proper habitat, same as any other organism.
Quail are not always finished nesting by the end of June. Weather has a lot to do with that.
