"Sponto" N-712 Emulsifiers for Aquatic Weed Control Combinations of an aromatic solvent and the type of surfactants listed below show remarkable herbicidal activity against weeds in irrigation systems which result in weakening their root systems and allowing water to flow freely "Sponto" 2029 "Sponto" AD-410 "Sponto" N-714 "Sponto" N-710 "Sponto" 200 "Sponto" 2210 "Sponto" AC60-02D systems