The invention relates to the use of one or more etherified lactate esters of formula (I) for reducing the drift during the application of plant-treatment agents, wherein R represents an unbranched or branched saturated alkyl, having 1 to 30 carbon atoms, or an unbranched or branched mono- or polyunsaturated alkenyl having 2 to 30 carbon atoms, R1 represents a radical of formula -(AO)m-R′, (AO)m, which is composed of ethylene oxide units, composed of propylene oxide units, composed of butylene oxide units, composed of mixtures of ethylene oxide- and propylene oxide units, or composed of mixtures of ethylene oxide units and butylene oxide units, wherein m represents on average an integer between 1 and 30, and R′ represents hydrogen, a branched or unbranched saturated alkyl radical having 1 to 20 carbon atoms, or a branched or unbranched mono- or polyunsaturated alkylene radical having 2 to 20 carbon atoms.
