Environmental considerations in the development of diquat and paraquat as aquatic herbicides

Abstract

As the world's requirement for fresh water expands, so does the problem of increased aquatic weed growth due to enrichment of natural waters. Weeds impair the recreational value of lakes and streams; they also hinder navigation, block irrigation channels and cause problems in pumping stations and hydroelectric turbines; but herbicides for their control must be safe and not introduce environmental hazards. Diquat and paraquat have many advantages for this purpose.