What About the Frogs?

I am beginning a research project outside of this class analyzing the effects of pesticides on frogs.  As I am surfing different websites I am coming across some really astounding material.  For my study, I will be using African Clawed frogs which are a fully aquatic species.  Because these frogs do not leave the water, they are more susceptible to the effects of common pesticides.  It has been discovered that altrazide, one of the most common herbicides used by farmers, mutates male frogs into female frogs.  The male frogs are chemically castrated and their testes mutate into fully functioning ovaries.  As you can imagine, this is detrimental to the population as the frogs cannot continue to reproduce without male frogs.  I was shocked to read that the manufacturers of some of these herbicides claim that the studies done on this are not realistic because in the farm fields the frogs would hide from the spray of the pesticide application.  As I was reading this I could not help but think, "What are these people thinking?"  Even if the frogs did take shelter, what happens to the chemicals?  They go to the water source that the frogs live in!  The people who manufacture the pesticides are so worried about selling their product that they are trying to make it sound safe.  In my opinion, they are not doing a very good job of it!  This is only a portion of the horrifying things I have been reading as I do my research.