#$%^&*AU2012261504A120130620.pdf#####ABSTRACT The present invention relates to an agrochemical composition comprising a herbicide selected from paraquat and/or diquat, and a surfactant system comprising a synergistic combination of a betaine surfactant, and an additional surfactant comprising an amine or etheramine. The invention further relates to a process for treating vegetation by applying to plants and/or soil the agrochemical composition of the invention, and a method of killing or inhibiting vegetation or a method of killing plant pests by applying the agrochemical composition of the invention. The invention also relates to a method of long term weed management comprising the steps of sequentially administering to vegetation the agrochemical composition of the invention and a glyphosate-containing agrochernical composition.