LIQUID HERBICIDE COMPOSITIONS OF N-PHOSPHONOMETHYL -N- CARBOXYMETHYL COMPOUNDS

A liquid phytoactive composition characterised in that it comprises; (a) an N-phosphonomethyl-N-carboxymethyl compound; (b) one or more liquid nonionic surfanctants; (c) a dispersing medium for the said N-phosphonomethyl-N-carboxymethyl compound; and (d) one or more inert adjuvants is disclosed. A liquid herbicidal concentrate characterised in that it comprises: (a) an herbicidally effective N-phosphonomethyl-N-carboxymethyl compound (b) one or more liquid nonionic surfactants; (c) a solvent for the said N-phosphonomethyl-N-carboxymethyl compound; and (d) one or more inert adjuvants is also disclosed. The formulation of this invention has the advantage that it can contain a high amount of active ingredient, is thermally stable over a wide temperature range, is compatible with and dilutable in both hard and soft water, and is also compatible and dilutable with a nitrogeneous fertilizer solution, and is minimally irritable to the eyes. Also, the formulation of this invention is stable upon aging over months of storage, over a wide temperature range. In addition, the nonionic surfactants are derived from naturally occurring products and are readily broken down by microorganisms.